2012121022220 has 24 divisors (see below), whose sum is σ = 4241046239808. Its totient is φ = 801878486400.

The previous prime is 2012121022211. The next prime is 2012121022237. The reversal of 2012121022220 is 222201212102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185614601 + ... + 185625440.

It is an arithmetic number, because the mean of its divisors is an integer number (176710259992).

Almost surely, 2^{2012121022220} is an apocalyptic number.

2012121022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012121022220 is an abundant number, since it is smaller than the sum of its proper divisors (2228925217588).

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

2012121022220 is a wasteful number, since it uses less digits than its factorization.

2012121022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371240321 (or 371240319 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2012121022220 its reverse (222201212102), we get a palindrome (2234322234322).

The spelling of 2012121022220 in words is "two trillion, twelve billion, one hundred twenty-one million, twenty-two thousand, two hundred twenty".