121001021022 has 32 divisors (see below), whose sum is σ = 276717176064. Its totient is φ = 34553793600.

The previous prime is 121001021003. The next prime is 121001021051. The reversal of 121001021022 is 220120100121.

It is a junction number, because it is equal to n+sod(n) for n = 121001020989 and 121001021007.

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, 664879 + ... + 827082.

It is an arithmetic number, because the mean of its divisors is an integer number (8647411752).

Almost surely, 2^121001021022 is an apocalyptic number.

121001021022 is an abundant number, since it is smaller than the sum of its proper divisors (155716155042).

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

121001021022 is a wasteful number, since it uses less digits than its factorization.

121001021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493904.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121001021022 its reverse (220120100121), we get a palindrome (341121121143).

The spelling of 121001021022 in words is "one hundred twenty-one billion, one million, twenty-one thousand, twenty-two".