10402212021 has 8 divisors (see below), whose sum is σ = 13870657344. Its totient is φ = 6934287360.

The previous prime is 10402211999. The next prime is 10402212077. The reversal of 10402212021 is 12021220401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10402212021 - 2⁷ = 10402211893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10402212091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80881 + ... + 165366.

It is an arithmetic number, because the mean of its divisors is an integer number (1733832168).

Almost surely, 2^10402212021 is an apocalyptic number.

It is an amenable number.

10402212021 is a deficient number, since it is larger than the sum of its proper divisors (3468445323).

10402212021 is a wasteful number, since it uses less digits than its factorization.

10402212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260331.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10402212021 its reverse (12021220401), we get a palindrome (22423432422).

The spelling of 10402212021 in words is "ten billion, four hundred two million, two hundred twelve thousand, twenty-one".