212020122331 has 4 divisors (see below), whose sum is σ = 212048126752. Its totient is φ = 211992117912.

The previous prime is 212020122277. The next prime is 212020122407. The reversal of 212020122331 is 133221020212.

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 212020122331 - 2⁷ = 212020122203 is a prime.

It is a super-2 number, since 2×212020122331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212020122299 and 212020122308.

It is not an unprimeable number, because it can be changed into a prime (212020122731) 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, 13990851 + ... + 14005996.

It is an arithmetic number, because the mean of its divisors is an integer number (53012031688).

Almost surely, 2^212020122331 is an apocalyptic number.

212020122331 is a deficient number, since it is larger than the sum of its proper divisors (28004421).

212020122331 is an equidigital number, since it uses as much as digits as its factorization.

212020122331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28004420.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212020122331 its reverse (133221020212), we get a palindrome (345241142543).

The spelling of 212020122331 in words is "two hundred twelve billion, twenty million, one hundred twenty-two thousand, three hundred thirty-one".