15221410401131 has 4 divisors (see below), whose sum is σ = 16605174983064. Its totient is φ = 13837645819200.

The previous prime is 15221410401107. The next prime is 15221410401167. The reversal of 15221410401131 is 13110401412251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15221410401131 is a prime.

It is a super-2 number, since 2×15221410401131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15221410401131.

It is not an unprimeable number, because it can be changed into a prime (15221410401181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691882290950 + ... + 691882290971.

It is an arithmetic number, because the mean of its divisors is an integer number (4151293745766).

Almost surely, 2^{15221410401131} is an apocalyptic number.

15221410401131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15221410401131 is a deficient number, since it is larger than the sum of its proper divisors (1383764581933).

15221410401131 is a wasteful number, since it uses less digits than its factorization.

15221410401131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383764581932.

The product of its (nonzero) digits is 960, while the sum is 26.

Adding to 15221410401131 its reverse (13110401412251), we get a palindrome (28331811813382).

The spelling of 15221410401131 in words is "fifteen trillion, two hundred twenty-one billion, four hundred ten million, four hundred one thousand, one hundred thirty-one".