1122420312156 has 48 divisors (see below), whose sum is σ = 3076844496768. Its totient is φ = 313963723200.

The previous prime is 1122420312067. The next prime is 1122420312157. The reversal of 1122420312156 is 6512130242211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122420312157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327043830 + ... + 327047261.

It is an arithmetic number, because the mean of its divisors is an integer number (64100927016).

Almost surely, 2^{1122420312156} is an apocalyptic number.

It is an amenable number.

1122420312156 is an abundant number, since it is smaller than the sum of its proper divisors (1954424184612).

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

1122420312156 is a wasteful number, since it uses less digits than its factorization.

1122420312156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654091122 (or 654091120 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 1122420312156 its reverse (6512130242211), we get a palindrome (7634550554367).

The spelling of 1122420312156 in words is "one trillion, one hundred twenty-two billion, four hundred twenty million, three hundred twelve thousand, one hundred fifty-six".