211012023021 has 4 divisors (see below), whose sum is σ = 281349364032. Its totient is φ = 140674682012.

The previous prime is 211012022983. The next prime is 211012023037. The reversal of 211012023021 is 120320210112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211012023021 - 2⁶ = 211012022957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012023071) 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, 35168670501 + ... + 35168670506.

It is an arithmetic number, because the mean of its divisors is an integer number (70337341008).

Almost surely, 2^211012023021 is an apocalyptic number.

It is an amenable number.

211012023021 is a deficient number, since it is larger than the sum of its proper divisors (70337341011).

211012023021 is an equidigital number, since it uses as much as digits as its factorization.

211012023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70337341010.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 211012023021 its reverse (120320210112), we get a palindrome (331332233133).

The spelling of 211012023021 in words is "two hundred eleven billion, twelve million, twenty-three thousand, twenty-one".