1220120100102 has 32 divisors (see below), whose sum is σ = 2474990510688. Its totient is φ = 400920938496.

The previous prime is 1220120100097. The next prime is 1220120100109. The reversal of 1220120100102 is 2010010210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220120100109) 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, 76738 + ... + 1564010.

It is an arithmetic number, because the mean of its divisors is an integer number (77343453459).

Almost surely, 2^{1220120100102} is an apocalyptic number.

1220120100102 is an abundant number, since it is smaller than the sum of its proper divisors (1254870410586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220120100102 is a wasteful number, since it uses less digits than its factorization.

1220120100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489224.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1220120100102 its reverse (2010010210221), we get a palindrome (3230130310323).

The spelling of 1220120100102 in words is "one trillion, two hundred twenty billion, one hundred twenty million, one hundred thousand, one hundred two".