22021121001210 has 64 divisors (see below), whose sum is σ = 53159989938048. Its totient is φ = 5837937179904.

The previous prime is 22021121001179. The next prime is 22021121001211. The reversal of 22021121001210 is 1210012112022.

It is a super-2 number, since 2×22021121001210² (a number of 27 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22021121001210.

It is not an unprimeable number, because it can be changed into a prime (22021121001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76060284 + ... + 76349256.

It is an arithmetic number, because the mean of its divisors is an integer number (830624842782).

Almost surely, 2^{22021121001210} is an apocalyptic number.

22021121001210 is an abundant number, since it is smaller than the sum of its proper divisors (31138868936838).

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

22021121001210 is a wasteful number, since it uses less digits than its factorization.

22021121001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303839.

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

Adding to 22021121001210 its reverse (1210012112022), we get a palindrome (23231133113232).

The spelling of 22021121001210 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, one thousand, two hundred ten".