22121002101210 has 16 divisors (see below), whose sum is σ = 53090405042976. Its totient is φ = 5898933893648.

The previous prime is 22121002101179. The next prime is 22121002101229. The reversal of 22121002101210 is 1210120012122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22121002101210.

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, 368683368324 + ... + 368683368383.

It is an arithmetic number, because the mean of its divisors is an integer number (3318150315186).

Almost surely, 2^{22121002101210} is an apocalyptic number.

22121002101210 is an abundant number, since it is smaller than the sum of its proper divisors (30969402941766).

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

22121002101210 is a wasteful number, since it uses less digits than its factorization.

22121002101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737366736717.

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

Adding to 22121002101210 its reverse (1210120012122), we get a palindrome (23331122113332).

The spelling of 22121002101210 in words is "twenty-two trillion, one hundred twenty-one billion, two million, one hundred one thousand, two hundred ten".