1021010121100 has 36 divisors (see below), whose sum is σ = 2237528539008. Its totient is φ = 404360440000.

The previous prime is 1021010121091. The next prime is 1021010121101. The reversal of 1021010121100 is 11210101201.

1021010121100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1021010121101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50534956 + ... + 50555155.

It is an arithmetic number, because the mean of its divisors is an integer number (62153570528).

Almost surely, 2^{1021010121100} is an apocalyptic number.

1021010121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021010121100 is an abundant number, since it is smaller than the sum of its proper divisors (1216518417908).

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

1021010121100 is a wasteful number, since it uses less digits than its factorization.

1021010121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101090226 (or 101090219 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1021010121100 its reverse (11210101201), we get a palindrome (1032220222301).

The spelling of 1021010121100 in words is "one trillion, twenty-one billion, ten million, one hundred twenty-one thousand, one hundred".