122420540000 has 180 divisors, whose sum is σ = 331047821412. Its totient is φ = 44515680000.

The previous prime is 122420539993. The next prime is 122420540059. The reversal of 122420540000 is 45024221.

It is a happy number.

It is a super-2 number, since 2×122420540000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2394707 + ... + 2445293.

Almost surely, 2^122420540000 is an apocalyptic number.

122420540000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122420540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165523910706).

122420540000 is an abundant number, since it is smaller than the sum of its proper divisors (208627281412).

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

122420540000 is an equidigital number, since it uses as much as digits as its factorization.

122420540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50639 (or 50605 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 122420540000 its reverse (45024221), we get a palindrome (122465564221).

The spelling of 122420540000 in words is "one hundred twenty-two billion, four hundred twenty million, five hundred forty thousand".