1220201102121 has 8 divisors (see below), whose sum is σ = 1626940092480. Its totient is φ = 813464756592.

The previous prime is 1220201102111. The next prime is 1220201102129. The reversal of 1220201102121 is 1212011020221.

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

It is not a de Polignac number, because 1220201102121 - 2⁷ = 1220201101993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220201102121.

It is not an unprimeable number, because it can be changed into a prime (1220201102129) 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, 1042171 + ... + 1877903.

It is an arithmetic number, because the mean of its divisors is an integer number (203367511560).

Almost surely, 2^{1220201102121} is an apocalyptic number.

It is an amenable number.

1220201102121 is a deficient number, since it is larger than the sum of its proper divisors (406738990359).

1220201102121 is an equidigital number, since it uses as much as digits as its factorization.

1220201102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322415.

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

Adding to 1220201102121 its reverse (1212011020221), we get a palindrome (2432212122342).

The spelling of 1220201102121 in words is "one trillion, two hundred twenty billion, two hundred one million, one hundred two thousand, one hundred twenty-one".