1222012202021 has 16 divisors (see below), whose sum is σ = 1327229030400. Its totient is φ = 1118409078528.

The previous prime is 1222012202009. The next prime is 1222012202027. The reversal of 1222012202021 is 1202022102221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1222012202021 - 2⁶ = 1222012201957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222012202027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2336525 + ... + 2811293.

It is an arithmetic number, because the mean of its divisors is an integer number (82951814400).

Almost surely, 2^{1222012202021} is an apocalyptic number.

It is an amenable number.

1222012202021 is a deficient number, since it is larger than the sum of its proper divisors (105216828379).

1222012202021 is a wasteful number, since it uses less digits than its factorization.

1222012202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476468.

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

Adding to 1222012202021 its reverse (1202022102221), we get a palindrome (2424034304242).

The spelling of 1222012202021 in words is "one trillion, two hundred twenty-two billion, twelve million, two hundred two thousand, twenty-one".