213221143420131 has 32 divisors (see below), whose sum is σ = 356567965544448. Its totient is φ = 110100971463840.

The previous prime is 213221143420127. The next prime is 213221143420183. The reversal of 213221143420131 is 131024341122312.

It is not a de Polignac number, because 213221143420131 - 2² = 213221143420127 is a prime.

It is a super-2 number, since 2×213221143420131² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213221143420231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2763540025 + ... + 2763617178.

It is an arithmetic number, because the mean of its divisors is an integer number (11142748923264).

Almost surely, 2^{213221143420131} is an apocalyptic number.

213221143420131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213221143420131 is a deficient number, since it is larger than the sum of its proper divisors (143346822124317).

213221143420131 is a wasteful number, since it uses less digits than its factorization.

213221143420131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527157391.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 213221143420131 its reverse (131024341122312), we get a palindrome (344245484542443).

The spelling of 213221143420131 in words is "two hundred thirteen trillion, two hundred twenty-one billion, one hundred forty-three million, four hundred twenty thousand, one hundred thirty-one".