212021301131 has 16 divisors (see below), whose sum is σ = 236328543360. Its totient is φ = 189030879360.

The previous prime is 212021301061. The next prime is 212021301133. The reversal of 212021301131 is 131103120212.

It is a cyclic number.

It is not a de Polignac number, because 212021301131 - 2¹⁰ = 212021300107 is a prime.

It is a super-2 number, since 2×212021301131² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021301133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5506376 + ... + 5544746.

It is an arithmetic number, because the mean of its divisors is an integer number (14770533960).

Almost surely, 2^212021301131 is an apocalyptic number.

212021301131 is a deficient number, since it is larger than the sum of its proper divisors (24307242229).

212021301131 is a wasteful number, since it uses less digits than its factorization.

212021301131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55514.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 212021301131 its reverse (131103120212), we get a palindrome (343124421343).

The spelling of 212021301131 in words is "two hundred twelve billion, twenty-one million, three hundred one thousand, one hundred thirty-one".