122213031000 has 128 divisors (see below), whose sum is σ = 381775680000. Its totient is φ = 32549884800.

The previous prime is 122213030959. The next prime is 122213031007. The reversal of 122213031000 is 130312221.

It is a super-2 number, since 2×122213031000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122213031007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2444251 + ... + 2493749.

It is an arithmetic number, because the mean of its divisors is an integer number (2982622500).

Almost surely, 2^122213031000 is an apocalyptic number.

122213031000 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 122213031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190887840000).

122213031000 is an abundant number, since it is smaller than the sum of its proper divisors (259562649000).

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

122213031000 is a wasteful number, since it uses less digits than its factorization.

122213031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50346 (or 50332 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 122213031000 its reverse (130312221), we get a palindrome (122343343221).

The spelling of 122213031000 in words is "one hundred twenty-two billion, two hundred thirteen million, thirty-one thousand".