10021022420 has 12 divisors (see below), whose sum is σ = 21044147124. Its totient is φ = 4008408960.

The previous prime is 10021022399. The next prime is 10021022441. The reversal of 10021022420 is 2422012001.

It is an interprime number because it is at equal distance from previous prime (10021022399) and next prime (10021022441).

It can be written as a sum of positive squares in 2 ways, for example, as 2630869264 + 7390153156 = 51292^2 + 85966^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10021022395 and 10021022404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250525541 + ... + 250525580.

It is an arithmetic number, because the mean of its divisors is an integer number (1753678927).

Almost surely, 2^10021022420 is an apocalyptic number.

10021022420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021022420 is an abundant number, since it is smaller than the sum of its proper divisors (11023124704).

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

10021022420 is a wasteful number, since it uses less digits than its factorization.

10021022420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501051130 (or 501051128 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 10021022420 its reverse (2422012001), we get a palindrome (12443034421).

The spelling of 10021022420 in words is "ten billion, twenty-one million, twenty-two thousand, four hundred twenty".