121220201022 has 16 divisors (see below), whose sum is σ = 242585682960. Its totient is φ = 40382520192.

The previous prime is 121220200897. The next prime is 121220201041. The reversal of 121220201022 is 220102022121.

It is a junction number, because it is equal to n+sod(n) for n = 121220200992 and 121220201010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6042523 + ... + 6062550.

It is an arithmetic number, because the mean of its divisors is an integer number (15161605185).

Almost surely, 2^121220201022 is an apocalyptic number.

121220201022 is an abundant number, since it is smaller than the sum of its proper divisors (121365481938).

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

121220201022 is a wasteful number, since it uses less digits than its factorization.

121220201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12106747.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121220201022 its reverse (220102022121), we get a palindrome (341322223143).

The spelling of 121220201022 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred one thousand, twenty-two".