1012020222100 has 36 divisors (see below), whose sum is σ = 2325265290684. Its totient is φ = 380995847680.

The previous prime is 1012020222077. The next prime is 1012020222133. The reversal of 1012020222100 is 12220202101.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4650694416 + 1007369527684 = 68196^2 + 1003678^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297651307 + ... + 297654706.

It is an arithmetic number, because the mean of its divisors is an integer number (64590702519).

Almost surely, 2^{1012020222100} is an apocalyptic number.

1012020222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012020222100 is an abundant number, since it is smaller than the sum of its proper divisors (1313245068584).

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

1012020222100 is a wasteful number, since it uses less digits than its factorization.

1012020222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595306044 (or 595306037 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1012020222100 its reverse (12220202101), we get a palindrome (1024240424201).

The spelling of 1012020222100 in words is "one trillion, twelve billion, twenty million, two hundred twenty-two thousand, one hundred".