1220120111002 has 32 divisors (see below), whose sum is σ = 1984298621760. Its totient is φ = 559326591360.

The previous prime is 1220120110997. The next prime is 1220120111003. The reversal of 1220120111002 is 2001110210221.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1220120111003) 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, 6729477 + ... + 6908407.

It is an arithmetic number, because the mean of its divisors is an integer number (62009331930).

Almost surely, 2^{1220120111002} is an apocalyptic number.

1220120111002 is a deficient number, since it is larger than the sum of its proper divisors (764178510758).

1220120111002 is a wasteful number, since it uses less digits than its factorization.

1220120111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180718.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220120111002 its reverse (2001110210221), we get a palindrome (3221230321223).

The spelling of 1220120111002 in words is "one trillion, two hundred twenty billion, one hundred twenty million, one hundred eleven thousand, two".