2521221032 has 32 divisors (see below), whose sum is σ = 5170370400. Its totient is φ = 1143048000.

The previous prime is 2521221029. The next prime is 2521221097. The reversal of 2521221032 is 2301221252.

It is a junction number, because it is equal to n+sod(n) for n = 2521220995 and 2521221013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2594 + ... + 71057.

It is an arithmetic number, because the mean of its divisors is an integer number (161574075).

Almost surely, 2^2521221032 is an apocalyptic number.

2521221032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2521221032 is an abundant number, since it is smaller than the sum of its proper divisors (2649149368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2521221032 is a wasteful number, since it uses less digits than its factorization.

2521221032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74057 (or 74053 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2521221032 is about 50211.7618890236. The cubic root of 2521221032 is about 1361.0381764372.

Adding to 2521221032 its reverse (2301221252), we get a palindrome (4822442284).

The spelling of 2521221032 in words is "two billion, five hundred twenty-one million, two hundred twenty-one thousand, thirty-two".