1013120220156 has 96 divisors (see below), whose sum is σ = 2782068726528. Its totient is φ = 283495080960.

The previous prime is 1013120220137. The next prime is 1013120220269. The reversal of 1013120220156 is 6510220213101.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4140310 + ... + 4378173.

It is an arithmetic number, because the mean of its divisors is an integer number (28979882568).

Almost surely, 2^{1013120220156} is an apocalyptic number.

It is an amenable number.

1013120220156 is an abundant number, since it is smaller than the sum of its proper divisors (1768948506372).

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

1013120220156 is a wasteful number, since it uses less digits than its factorization.

1013120220156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8518571 (or 8518569 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 1013120220156 its reverse (6510220213101), we get a palindrome (7523340433257).

The spelling of 1013120220156 in words is "one trillion, thirteen billion, one hundred twenty million, two hundred twenty thousand, one hundred fifty-six".