1220020230121 has 48 divisors (see below), whose sum is σ = 1645565967360. Its totient is φ = 876287315520.

The previous prime is 1220020230073. The next prime is 1220020230127. The reversal of 1220020230121 is 1210320200221.

It is a happy number.

It is not a de Polignac number, because 1220020230121 - 2⁹ = 1220020229609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220020230095 and 1220020230104.

It is not an unprimeable number, because it can be changed into a prime (1220020230127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1698276 + ... + 2307418.

It is an arithmetic number, because the mean of its divisors is an integer number (34282624320).

Almost surely, 2^{1220020230121} is an apocalyptic number.

1220020230121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220020230121 is a deficient number, since it is larger than the sum of its proper divisors (425545737239).

1220020230121 is a wasteful number, since it uses less digits than its factorization.

1220020230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609254 (or 609217 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1220020230121 its reverse (1210320200221), we get a palindrome (2430340430342).

The spelling of 1220020230121 in words is "one trillion, two hundred twenty billion, twenty million, two hundred thirty thousand, one hundred twenty-one".