10155532221420 has 96 divisors (see below), whose sum is σ = 29363724445440. Its totient is φ = 2620894268160.

The previous prime is 10155532221413. The next prime is 10155532221431. The reversal of 10155532221420 is 2412223555101.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17774986 + ... + 18337425.

It is an arithmetic number, because the mean of its divisors is an integer number (305872129640).

Almost surely, 2^{10155532221420} is an apocalyptic number.

10155532221420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10155532221420 is an abundant number, since it is smaller than the sum of its proper divisors (19208192224020).

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

10155532221420 is a wasteful number, since it uses less digits than its factorization.

10155532221420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36112575 (or 36112573 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 10155532221420 its reverse (2412223555101), we get a palindrome (12567755776521).

The spelling of 10155532221420 in words is "ten trillion, one hundred fifty-five billion, five hundred thirty-two million, two hundred twenty-one thousand, four hundred twenty".