212211020131 has 4 divisors (see below), whose sum is σ = 231502931064. Its totient is φ = 192919109200.

The previous prime is 212211020123. The next prime is 212211020141. The reversal of 212211020131 is 131020112212.

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

It is a cyclic number.

It is not a de Polignac number, because 212211020131 - 2³ = 212211020123 is a prime.

It is a super-2 number, since 2×212211020131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212211020141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9645955450 + ... + 9645955471.

It is an arithmetic number, because the mean of its divisors is an integer number (57875732766).

Almost surely, 2^212211020131 is an apocalyptic number.

212211020131 is a deficient number, since it is larger than the sum of its proper divisors (19291910933).

212211020131 is a wasteful number, since it uses less digits than its factorization.

212211020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19291910932.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212211020131 its reverse (131020112212), we get a palindrome (343231132343).

The spelling of 212211020131 in words is "two hundred twelve billion, two hundred eleven million, twenty thousand, one hundred thirty-one".