1222112210021 has 8 divisors (see below), whose sum is σ = 1224058877664. Its totient is φ = 1220166627120.

The previous prime is 1222112209943. The next prime is 1222112210029. The reversal of 1222112210021 is 1200122112221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222112210021 - 2¹⁸ = 1222111947877 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 (1222112210029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1998986 + ... + 2537748.

It is an arithmetic number, because the mean of its divisors is an integer number (153007359708).

Almost surely, 2^{1222112210021} is an apocalyptic number.

It is an amenable number.

1222112210021 is a deficient number, since it is larger than the sum of its proper divisors (1946667643).

1222112210021 is an equidigital number, since it uses as much as digits as its factorization.

1222112210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542371.

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

Adding to 1222112210021 its reverse (1200122112221), we get a palindrome (2422234322242).

The spelling of 1222112210021 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, two hundred ten thousand, twenty-one".