2021111632225 has 24 divisors (see below), whose sum is σ = 2864439025280. Its totient is φ = 1385791355520.

The previous prime is 2021111632139. The next prime is 2021111632249. The reversal of 2021111632225 is 5222361111202.

It is a happy number.

It is not a de Polignac number, because 2021111632225 - 2¹⁵ = 2021111599457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021111632193 and 2021111632202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1692181 + ... + 2627869.

Almost surely, 2^{2021111632225} is an apocalyptic number.

2021111632225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2021111632225 is a deficient number, since it is larger than the sum of its proper divisors (843327393055).

2021111632225 is a wasteful number, since it uses less digits than its factorization.

2021111632225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948049 (or 948044 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 2021111632225 its reverse (5222361111202), we get a palindrome (7243472743427).

The spelling of 2021111632225 in words is "two trillion, twenty-one billion, one hundred eleven million, six hundred thirty-two thousand, two hundred twenty-five".