220121012012 has 48 divisors (see below), whose sum is σ = 424756410624. Its totient is φ = 98979576000.

The previous prime is 220121011993. The next prime is 220121012057. The reversal of 220121012012 is 210210121022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4375562 + ... + 4425582.

It is an arithmetic number, because the mean of its divisors is an integer number (8849091888).

Almost surely, 2^220121012012 is an apocalyptic number.

220121012012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

220121012012 is a deficient number, since it is larger than the sum of its proper divisors (204635398612).

220121012012 is a wasteful number, since it uses less digits than its factorization.

220121012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51110 (or 51108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220121012012 its reverse (210210121022), we get a palindrome (430331133034).

The spelling of 220121012012 in words is "two hundred twenty billion, one hundred twenty-one million, twelve thousand, twelve".