22121000202 has 32 divisors (see below), whose sum is σ = 53536540032. Its totient is φ = 5948504064.

The previous prime is 22121000171. The next prime is 22121000233. The reversal of 22121000202 is 20200012122.

It is an interprime number because it is at equal distance from previous prime (22121000171) and next prime (22121000233).

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, 15490183 + ... + 15491610.

It is an arithmetic number, because the mean of its divisors is an integer number (1673016876).

Almost surely, 2^22121000202 is an apocalyptic number.

22121000202 is an abundant number, since it is smaller than the sum of its proper divisors (31415539830).

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

22121000202 is a wasteful number, since it uses less digits than its factorization.

22121000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30981822.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22121000202 its reverse (20200012122), we get a palindrome (42321012324).

The spelling of 22121000202 in words is "twenty-two billion, one hundred twenty-one million, two hundred two", and thus it is an aban number.