2122000001021 has 4 divisors (see below), whose sum is σ = 2130454184544. Its totient is φ = 2113545817500.

The previous prime is 2122000001003. The next prime is 2122000001027. The reversal of 2122000001021 is 1201000002212.

It is a happy number.

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 2122000001021 - 2²² = 2121995806717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2122000000993 and 2122000001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122000001027) 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, 4227091385 + ... + 4227091886.

It is an arithmetic number, because the mean of its divisors is an integer number (532613546136).

Almost surely, 2^{2122000001021} is an apocalyptic number.

It is an amenable number.

2122000001021 is a deficient number, since it is larger than the sum of its proper divisors (8454183523).

2122000001021 is an equidigital number, since it uses as much as digits as its factorization.

2122000001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8454183522.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2122000001021 its reverse (1201000002212), we get a palindrome (3323000003233).

The spelling of 2122000001021 in words is "two trillion, one hundred twenty-two billion, one thousand, twenty-one".