1021122100212 has 24 divisors (see below), whose sum is σ = 2394963411456. Its totient is φ = 338610436608.

The previous prime is 1021122100177. The next prime is 1021122100247. The reversal of 1021122100212 is 2120012211201.

It is an interprime number because it is at equal distance from previous prime (1021122100177) and next prime (1021122100247).

It is a junction number, because it is equal to n+sod(n) for n = 1021122100191 and 1021122100200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220447188 + ... + 220451819.

It is an arithmetic number, because the mean of its divisors is an integer number (99790142144).

Almost surely, 2^{1021122100212} is an apocalyptic number.

1021122100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021122100212 is an abundant number, since it is smaller than the sum of its proper divisors (1373841311244).

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

1021122100212 is a wasteful number, since it uses less digits than its factorization.

1021122100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440899207 (or 440899205 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1021122100212 its reverse (2120012211201), we get a palindrome (3141134311413).

The spelling of 1021122100212 in words is "one trillion, twenty-one billion, one hundred twenty-two million, one hundred thousand, two hundred twelve".