2021121221102 has 8 divisors (see below), whose sum is σ = 3031690305000. Its totient is φ = 1010557786104.

The previous prime is 2021121221087. The next prime is 2021121221111. The reversal of 2021121221102 is 2011221211202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361352 + ... + 2042747.

It is an arithmetic number, because the mean of its divisors is an integer number (378961288125).

Almost surely, 2^{2021121221102} is an apocalyptic number.

2021121221102 is a deficient number, since it is larger than the sum of its proper divisors (1010569083898).

2021121221102 is a wasteful number, since it uses less digits than its factorization.

2021121221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824450.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2021121221102 its reverse (2011221211202), we get a palindrome (4032342432304).

The spelling of 2021121221102 in words is "two trillion, twenty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred two".