211202211211121 has 16 divisors (see below), whose sum is σ = 236849810588160. Its totient is φ = 186986692468800.

The previous prime is 211202211211081. The next prime is 211202211211183. The reversal of 211202211211121 is 121112112202112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211202211211121 - 2²² = 211202207016817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211202211211093 and 211202211211102.

It is not an unprimeable number, because it can be changed into a prime (211202211211021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1854969785 + ... + 1855083638.

It is an arithmetic number, because the mean of its divisors is an integer number (14803113161760).

Almost surely, 2^{211202211211121} is an apocalyptic number.

It is an amenable number.

211202211211121 is a deficient number, since it is larger than the sum of its proper divisors (25647599377039).

211202211211121 is a wasteful number, since it uses less digits than its factorization.

211202211211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710053616.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211202211211121 its reverse (121112112202112), we get a palindrome (332314323413233).

Subtracting from 211202211211121 its reverse (121112112202112), we obtain a palindrome (90090099009009).

The spelling of 211202211211121 in words is "two hundred eleven trillion, two hundred two billion, two hundred eleven million, two hundred eleven thousand, one hundred twenty-one".