1220211110992 has 40 divisors (see below), whose sum is σ = 2514452564736. Its totient is φ = 571642000896.

The previous prime is 1220211110947. The next prime is 1220211111017. The reversal of 1220211110992 is 2990111120221.

It is a congruent number.

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, 9997798 + ... + 10119109.

Almost surely, 2^{1220211110992} is an apocalyptic number.

It is an amenable number.

1220211110992 is an abundant number, since it is smaller than the sum of its proper divisors (1294241453744).

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

1220211110992 is a wasteful number, since it uses less digits than its factorization.

1220211110992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20117155 (or 20117149 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 1220211110992 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred ten thousand, nine hundred ninety-two".