121111112220022 has 32 divisors (see below), whose sum is σ = 199538712213120. Its totient is φ = 54899539768320.

The previous prime is 121111112219959. The next prime is 121111112220023. The reversal of 121111112220022 is 220022211111121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111112220023) 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, 549765073 + ... + 549985324.

It is an arithmetic number, because the mean of its divisors is an integer number (6235584756660).

Almost surely, 2^{121111112220022} is an apocalyptic number.

121111112220022 is a deficient number, since it is larger than the sum of its proper divisors (78427599993098).

121111112220022 is a wasteful number, since it uses less digits than its factorization.

121111112220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099750536.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121111112220022 its reverse (220022211111121), we get a palindrome (341133323331143).

The spelling of 121111112220022 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty thousand, twenty-two".