1222112012021 has 4 divisors (see below), whose sum is σ = 1222124221344. Its totient is φ = 1222099802700.

The previous prime is 1222112012003. The next prime is 1222112012053. The reversal of 1222112012021 is 1202102112221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1222112012021 - 2³⁰ = 1221038270197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222112012621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5953265 + ... + 6155126.

It is an arithmetic number, because the mean of its divisors is an integer number (305531055336).

Almost surely, 2^{1222112012021} is an apocalyptic number.

It is an amenable number.

1222112012021 is a deficient number, since it is larger than the sum of its proper divisors (12209323).

1222112012021 is a wasteful number, since it uses less digits than its factorization.

1222112012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12209322.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222112012021 its reverse (1202102112221), we get a palindrome (2424214124242).

The spelling of 1222112012021 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, twelve thousand, twenty-one".