1220012010121 has 8 divisors (see below), whose sum is σ = 1257614294400. Its totient is φ = 1182894916848.

The previous prime is 1220012010073. The next prime is 1220012010157. The reversal of 1220012010121 is 1210102100221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220012010121 - 2²⁹ = 1219475139209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220012010821) 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, 121292646 + ... + 121302703.

It is an arithmetic number, because the mean of its divisors is an integer number (157201786800).

Almost surely, 2^{1220012010121} is an apocalyptic number.

It is an amenable number.

1220012010121 is a deficient number, since it is larger than the sum of its proper divisors (37602284279).

1220012010121 is a wasteful number, since it uses less digits than its factorization.

1220012010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242595503.

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

Adding to 1220012010121 its reverse (1210102100221), we get a palindrome (2430114110342).

The spelling of 1220012010121 in words is "one trillion, two hundred twenty billion, twelve million, ten thousand, one hundred twenty-one".