211142042013 has 16 divisors (see below), whose sum is σ = 323714126336. Its totient is φ = 119912393520.

The previous prime is 211142041991. The next prime is 211142042053. The reversal of 211142042013 is 310240241112.

It is not a de Polignac number, because 211142042013 - 2⁶ = 211142041949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211142042053) 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, 30838243 + ... + 30845088.

It is an arithmetic number, because the mean of its divisors is an integer number (20232132896).

Almost surely, 2^211142042013 is an apocalyptic number.

It is an amenable number.

211142042013 is a deficient number, since it is larger than the sum of its proper divisors (112572084323).

211142042013 is a wasteful number, since it uses less digits than its factorization.

211142042013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61683504.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 211142042013 its reverse (310240241112), we get a palindrome (521382283125).

The spelling of 211142042013 in words is "two hundred eleven billion, one hundred forty-two million, forty-two thousand, thirteen".