1222000021992 has 32 divisors (see below), whose sum is σ = 3055044091680. Its totient is φ = 407327469120.

The previous prime is 1222000021981. The next prime is 1222000022003. The reversal of 1222000021992 is 2991200002221.

It is an interprime number because it is at equal distance from previous prime (1222000021981) and next prime (1222000022003).

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, 1533567 + ... + 2189937.

It is an arithmetic number, because the mean of its divisors is an integer number (95470127865).

Almost surely, 2^{1222000021992} is an apocalyptic number.

1222000021992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222000021992 is an abundant number, since it is smaller than the sum of its proper divisors (1833044069688).

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

1222000021992 is a wasteful number, since it uses less digits than its factorization.

1222000021992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733953 (or 733949 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 1222000021992 in words is "one trillion, two hundred twenty-two billion, twenty-one thousand, nine hundred ninety-two".