1220102200121 has 4 divisors (see below), whose sum is σ = 1394402514432. Its totient is φ = 1045801885812.

The previous prime is 1220102200099. The next prime is 1220102200147. The reversal of 1220102200121 is 1210022010221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220102200121 - 2³⁴ = 1202922330937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220102200096 and 1220102200105.

It is not an unprimeable number, because it can be changed into a prime (1220102200321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87150157145 + ... + 87150157158.

It is an arithmetic number, because the mean of its divisors is an integer number (348600628608).

Almost surely, 2^{1220102200121} is an apocalyptic number.

It is an amenable number.

1220102200121 is a deficient number, since it is larger than the sum of its proper divisors (174300314311).

1220102200121 is an equidigital number, since it uses as much as digits as its factorization.

1220102200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174300314310.

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

Adding to 1220102200121 its reverse (1210022010221), we get a palindrome (2430124210342).

The spelling of 1220102200121 in words is "one trillion, two hundred twenty billion, one hundred two million, two hundred thousand, one hundred twenty-one".