30251222100220 has 24 divisors (see below), whose sum is σ = 69302799721008. Its totient is φ = 11000444400000.

The previous prime is 30251222100191. The next prime is 30251222100271. The reversal of 30251222100220 is 2200122215203.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 30251222100191 and 30251222100200.

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, 68752777281 + ... + 68752777720.

It is an arithmetic number, because the mean of its divisors is an integer number (2887616655042).

Almost surely, 2^{30251222100220} is an apocalyptic number.

It is an amenable number.

30251222100220 is an abundant number, since it is smaller than the sum of its proper divisors (39051577620788).

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

30251222100220 is a wasteful number, since it uses less digits than its factorization.

30251222100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137505555021 (or 137505555019 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 30251222100220 its reverse (2200122215203), we get a palindrome (32451344315423).

The spelling of 30251222100220 in words is "thirty trillion, two hundred fifty-one billion, two hundred twenty-two million, one hundred thousand, two hundred twenty".