122012021121 has 8 divisors (see below), whose sum is σ = 172252265184. Its totient is φ = 76556562240.

The previous prime is 122012021111. The next prime is 122012021149. The reversal of 122012021121 is 121120210221.

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

It is not a de Polignac number, because 122012021121 - 2¹⁵ = 122011988353 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122012021121.

It is not an unprimeable number, because it can be changed into a prime (122012021101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1196196235 + ... + 1196196336.

It is an arithmetic number, because the mean of its divisors is an integer number (21531533148).

Almost surely, 2^122012021121 is an apocalyptic number.

It is an amenable number.

122012021121 is a deficient number, since it is larger than the sum of its proper divisors (50240244063).

122012021121 is a wasteful number, since it uses less digits than its factorization.

122012021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392392591.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122012021121 its reverse (121120210221), we get a palindrome (243132231342).

The spelling of 122012021121 in words is "one hundred twenty-two billion, twelve million, twenty-one thousand, one hundred twenty-one".