130121231232220 has 48 divisors (see below), whose sum is σ = 276327784908000. Its totient is φ = 51463133568000.

The previous prime is 130121231232197. The next prime is 130121231232221. The reversal of 130121231232220 is 22232132121031.

It is a super-2 number, since 2×130121231232220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130121231232221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195915256 + ... + 196578304.

It is an arithmetic number, because the mean of its divisors is an integer number (5756828852250).

Almost surely, 2^{130121231232220} is an apocalyptic number.

130121231232220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130121231232220 is an abundant number, since it is smaller than the sum of its proper divisors (146206553675780).

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

130121231232220 is a wasteful number, since it uses less digits than its factorization.

130121231232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773398 (or 773396 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 130121231232220 its reverse (22232132121031), we get a palindrome (152353363353251).

The spelling of 130121231232220 in words is "one hundred thirty trillion, one hundred twenty-one billion, two hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty".