12121022020202 has 16 divisors (see below), whose sum is σ = 19251616773312. Its totient is φ = 5703837977280.

The previous prime is 12121022020193. The next prime is 12121022020291. The reversal of 12121022020202 is 20202022012121.

It is a happy number.

It is a super-2 number, since 2×12121022020202² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 4241948 + ... + 6498935.

It is an arithmetic number, because the mean of its divisors is an integer number (1203226048332).

Almost surely, 2^{12121022020202} is an apocalyptic number.

12121022020202 is a deficient number, since it is larger than the sum of its proper divisors (7130594753110).

12121022020202 is a wasteful number, since it uses less digits than its factorization.

12121022020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10774093.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12121022020202 its reverse (20202022012121), we get a palindrome (32323044032323).

The spelling of 12121022020202 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, twenty thousand, two hundred two".