2021454161231 has 16 divisors (see below), whose sum is σ = 2039648050368. Its totient is φ = 2003312640000.

The previous prime is 2021454161201. The next prime is 2021454161291. The reversal of 2021454161231 is 1321614541202.

It is not a de Polignac number, because 2021454161231 - 2²² = 2021449966927 is a prime.

It is a super-2 number, since 2×2021454161231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021454161201) 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, 451114511 + ... + 451118991.

It is an arithmetic number, because the mean of its divisors is an integer number (127478003148).

Almost surely, 2^{2021454161231} is an apocalyptic number.

2021454161231 is a deficient number, since it is larger than the sum of its proper divisors (18193889137).

2021454161231 is a wasteful number, since it uses less digits than its factorization.

2021454161231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9442.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 2021454161231 in words is "two trillion, twenty-one billion, four hundred fifty-four million, one hundred sixty-one thousand, two hundred thirty-one".