2131212132211 has 4 divisors (see below), whose sum is σ = 2167334371800. Its totient is φ = 2095089892624.

The previous prime is 2131212132169. The next prime is 2131212132223. The reversal of 2131212132211 is 1122312121312.

It is a happy number.

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 2131212132211 - 2³⁵ = 2096852393843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131212132271) 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, 18061119706 + ... + 18061119823.

It is an arithmetic number, because the mean of its divisors is an integer number (541833592950).

Almost surely, 2^{2131212132211} is an apocalyptic number.

2131212132211 is a deficient number, since it is larger than the sum of its proper divisors (36122239589).

2131212132211 is an equidigital number, since it uses as much as digits as its factorization.

2131212132211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36122239588.

The product of its digits is 288, while the sum is 22.

Adding to 2131212132211 its reverse (1122312121312), we get a palindrome (3253524253523).

The spelling of 2131212132211 in words is "two trillion, one hundred thirty-one billion, two hundred twelve million, one hundred thirty-two thousand, two hundred eleven".