121221101022 has 16 divisors (see below), whose sum is σ = 277076802432. Its totient is φ = 34634600280.

The previous prime is 121221101011. The next prime is 121221101041. The reversal of 121221101022 is 220101122121.

121221101022 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121221100992 and 121221101010.

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, 1443108304 + ... + 1443108387.

It is an arithmetic number, because the mean of its divisors is an integer number (17317300152).

Almost surely, 2^121221101022 is an apocalyptic number.

121221101022 is an abundant number, since it is smaller than the sum of its proper divisors (155855701410).

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

121221101022 is a wasteful number, since it uses less digits than its factorization.

121221101022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886216703.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121221101022 its reverse (220101122121), we get a palindrome (341322223143).

The spelling of 121221101022 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, twenty-two".