1220120122101 has 16 divisors (see below), whose sum is σ = 1627729435200. Its totient is φ = 812962245888.

The previous prime is 1220120122043. The next prime is 1220120122121. The reversal of 1220120122101 is 1012210210221.

It is not a de Polignac number, because 1220120122101 - 2¹¹ = 1220120120053 is a prime.

It is a super-2 number, since 2×1220120122101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220120122121) 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, 48426015 + ... + 48451203.

It is an arithmetic number, because the mean of its divisors is an integer number (101733089700).

Almost surely, 2^{1220120122101} is an apocalyptic number.

It is an amenable number.

1220120122101 is a deficient number, since it is larger than the sum of its proper divisors (407609313099).

1220120122101 is a wasteful number, since it uses less digits than its factorization.

1220120122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33508.

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

Adding to 1220120122101 its reverse (1012210210221), we get a palindrome (2232330332322).

The spelling of 1220120122101 in words is "one trillion, two hundred twenty billion, one hundred twenty million, one hundred twenty-two thousand, one hundred one".