202012111111211 has 4 divisors (see below), whose sum is σ = 213895176470712. Its totient is φ = 190129045751712.

The previous prime is 202012111111207. The next prime is 202012111111231. The reversal of 202012111111211 is 112111111210202.

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 202012111111211 - 2² = 202012111111207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 11883065359483 = 202012111111211 / (2 + 0 + 2 + 0 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 1 + 2 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202012111111211.

It is not an unprimeable number, because it can be changed into a prime (202012111111231) 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, 5941532679725 + ... + 5941532679758.

It is an arithmetic number, because the mean of its divisors is an integer number (53473794117678).

Almost surely, 2^{202012111111211} is an apocalyptic number.

202012111111211 is a deficient number, since it is larger than the sum of its proper divisors (11883065359501).

202012111111211 is a wasteful number, since it uses less digits than its factorization.

202012111111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11883065359500.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 202012111111211 its reverse (112111111210202), we get a palindrome (314123222321413).

The spelling of 202012111111211 in words is "two hundred two trillion, twelve billion, one hundred eleven million, one hundred eleven thousand, two hundred eleven".