20121112222002 has 96 divisors (see below), whose sum is σ = 50306594472576. Its totient is φ = 5752313107200.

The previous prime is 20121112221967. The next prime is 20121112222049. The reversal of 20121112222002 is 20022221112102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 29930149 + ... + 30595032.

It is an arithmetic number, because the mean of its divisors is an integer number (524027025756).

Almost surely, 2^{20121112222002} is an apocalyptic number.

20121112222002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20121112222002 is an abundant number, since it is smaller than the sum of its proper divisors (30185482250574).

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

20121112222002 is a wasteful number, since it uses less digits than its factorization.

20121112222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60525296 (or 60525293 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20121112222002 its reverse (20022221112102), we get a palindrome (40143333334104).

The spelling of 20121112222002 in words is "twenty trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, two".