1022201012100 has 144 divisors (see below), whose sum is σ = 3162549833856. Its totient is φ = 254012160000.

The previous prime is 1022201012081. The next prime is 1022201012179. The reversal of 1022201012100 is 12101022201.

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 47 ways as a sum of consecutive naturals, for example, 477136 + ... + 1507335.

It is an arithmetic number, because the mean of its divisors is an integer number (21962151624).

Almost surely, 2^{1022201012100} is an apocalyptic number.

1022201012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022201012100 is an abundant number, since it is smaller than the sum of its proper divisors (2140348821756).

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

1022201012100 is a wasteful number, since it uses less digits than its factorization.

1022201012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984606 (or 1984599 counting only the distinct ones).

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

Adding to 1022201012100 its reverse (12101022201), we get a palindrome (1034302034301).

It can be divided in two parts, 102220101 and 2100, that added together give a palindrome (102222201).

The spelling of 1022201012100 in words is "one trillion, twenty-two billion, two hundred one million, twelve thousand, one hundred".