2021212630553 has 4 divisors (see below), whose sum is σ = 2046797600640. Its totient is φ = 1995627660468.

The previous prime is 2021212630537. The next prime is 2021212630637. The reversal of 2021212630553 is 3550362121202.

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 2021212630553 - 2⁴ = 2021212630537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021212630513) 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, 12792484925 + ... + 12792485082.

It is an arithmetic number, because the mean of its divisors is an integer number (511699400160).

Almost surely, 2^{2021212630553} is an apocalyptic number.

It is an amenable number.

2021212630553 is a deficient number, since it is larger than the sum of its proper divisors (25584970087).

2021212630553 is an equidigital number, since it uses as much as digits as its factorization.

2021212630553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25584970086.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 2021212630553 its reverse (3550362121202), we get a palindrome (5571574751755).

The spelling of 2021212630553 in words is "two trillion, twenty-one billion, two hundred twelve million, six hundred thirty thousand, five hundred fifty-three".