10021012121100 has 72 divisors (see below), whose sum is σ = 29001440677888. Its totient is φ = 2671595956800.

The previous prime is 10021012121017. The next prime is 10021012121111. The reversal of 10021012121100 is 112121012001.

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

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, 3020056 + ... + 5400255.

Almost surely, 2^{10021012121100} is an apocalyptic number.

10021012121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021012121100 is an abundant number, since it is smaller than the sum of its proper divisors (18980428556788).

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

10021012121100 is a wasteful number, since it uses less digits than its factorization.

10021012121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424295 (or 8424288 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10021012121100 its reverse (112121012001), we get a palindrome (10133133133101).

The spelling of 10021012121100 in words is "ten trillion, twenty-one billion, twelve million, one hundred twenty-one thousand, one hundred".