1022121100120 has 32 divisors (see below), whose sum is σ = 2299808632320. Its totient is φ = 408842012160.

The previous prime is 1022121100111. The next prime is 1022121100129. The reversal of 1022121100120 is 210011212201.

It is an interprime number because it is at equal distance from previous prime (1022121100111) and next prime (1022121100129).

It is a self number, because there is not a number n which added to its sum of digits gives 1022121100120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121100129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3007984 + ... + 3330496.

It is an arithmetic number, because the mean of its divisors is an integer number (71869019760).

Almost surely, 2^{1022121100120} is an apocalyptic number.

1022121100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022121100120 is an abundant number, since it is smaller than the sum of its proper divisors (1277687532200).

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

1022121100120 is a wasteful number, since it uses less digits than its factorization.

1022121100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401755 (or 401751 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1022121100120 its reverse (210011212201), we get a palindrome (1232132312321).

The spelling of 1022121100120 in words is "one trillion, twenty-two billion, one hundred twenty-one million, one hundred thousand, one hundred twenty".