220012121000121 has 16 divisors (see below), whose sum is σ = 293430072022464. Its totient is φ = 146634460847424.

The previous prime is 220012121000093. The next prime is 220012121000137. The reversal of 220012121000121 is 121000121210022.

It is not a de Polignac number, because 220012121000121 - 2⁶ = 220012121000057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220012121000121.

It is not an unprimeable number, because it can be changed into a prime (220012121000171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432298015 + ... + 432806651.

It is an arithmetic number, because the mean of its divisors is an integer number (18339379501404).

Almost surely, 2^{220012121000121} is an apocalyptic number.

It is an amenable number.

220012121000121 is a deficient number, since it is larger than the sum of its proper divisors (73417951022343).

220012121000121 is a wasteful number, since it uses less digits than its factorization.

220012121000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547960.

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

Adding to 220012121000121 its reverse (121000121210022), we get a palindrome (341012242210143).

It can be divided in two parts, 2200121210001 and 21, that added together give a palindrome (2200121210022).

The spelling of 220012121000121 in words is "two hundred twenty trillion, twelve billion, one hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.