121021211111022 has 48 divisors (see below), whose sum is σ = 271925436182400. Its totient is φ = 40340220721272.

The previous prime is 121021211110999. The next prime is 121021211111033. The reversal of 121021211111022 is 220111112120121.

It is a happy number.

121021211111022 is a `hidden beast` number, since 1 + 210 + 212 + 111 + 110 + 22 = 666.

It is a super-2 number, since 2×121021211111022² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121021211110986 and 121021211111004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145530703 + ... + 146359925.

It is an arithmetic number, because the mean of its divisors is an integer number (5665113253800).

Almost surely, 2^{121021211111022} is an apocalyptic number.

121021211111022 is an abundant number, since it is smaller than the sum of its proper divisors (150904225071378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121021211111022 is an equidigital number, since it uses as much as digits as its factorization.

121021211111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129539 (or 1129527 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121021211111022 its reverse (220111112120121), we get a palindrome (341132323231143).

The spelling of 121021211111022 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred eleven million, one hundred eleven thousand, twenty-two".