121221111022 has 32 divisors (see below), whose sum is σ = 202154569344. Its totient is φ = 54047479200.

The previous prime is 121221110993. The next prime is 121221111043. The reversal of 121221111022 is 220111122121.

It is a junction number, because it is equal to n+sod(n) for n = 121221110987 and 121221111005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5832453 + ... + 5853199.

It is an arithmetic number, because the mean of its divisors is an integer number (6317330292).

Almost surely, 2^121221111022 is an apocalyptic number.

121221111022 is a deficient number, since it is larger than the sum of its proper divisors (80933458322).

121221111022 is a wasteful number, since it uses less digits than its factorization.

121221111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25824.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121221111022 its reverse (220111122121), we get a palindrome (341332233143).

The spelling of 121221111022 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred eleven thousand, twenty-two".