121021200222 has 64 divisors (see below), whose sum is σ = 276453305856. Its totient is φ = 35034341760.

The previous prime is 121021200221. The next prime is 121021200241. The reversal of 121021200222 is 222002120121.

It is a super-2 number, since 2×121021200222² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021200221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443508 + ... + 662375.

It is an arithmetic number, because the mean of its divisors is an integer number (4319582904).

Almost surely, 2^121021200222 is an apocalyptic number.

121021200222 is an abundant number, since it is smaller than the sum of its proper divisors (155432105634).

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

121021200222 is a wasteful number, since it uses less digits than its factorization.

121021200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105985.

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

Adding to 121021200222 its reverse (222002120121), we get a palindrome (343023320343).

The spelling of 121021200222 in words is "one hundred twenty-one billion, twenty-one million, two hundred thousand, two hundred twenty-two".