10221000102120 has 64 divisors (see below), whose sum is σ = 30712697449920. Its totient is φ = 2721182503424.

The previous prime is 10221000102109. The next prime is 10221000102121. The reversal of 10221000102120 is 2120100012201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10221000102096 and 10221000102105.

It is not an unprimeable number, because it can be changed into a prime (10221000102121) 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, 68949462 + ... + 69097541.

It is an arithmetic number, because the mean of its divisors is an integer number (479885897655).

Almost surely, 2^{10221000102120} is an apocalyptic number.

10221000102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221000102120 is an abundant number, since it is smaller than the sum of its proper divisors (20491697347800).

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

10221000102120 is a wasteful number, since it uses less digits than its factorization.

10221000102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138047634 (or 138047630 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10221000102120 its reverse (2120100012201), we get a palindrome (12341100114321).

The spelling of 10221000102120 in words is "ten trillion, two hundred twenty-one billion, one hundred two thousand, one hundred twenty".