111212022000 has 160 divisors (see below), whose sum is σ = 359618036544. Its totient is φ = 29568000000.

The previous prime is 111212021989. The next prime is 111212022017. The reversal of 111212022000 is 220212111.

It is a super-2 number, since 2×111212022000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 1994500 + ... + 2049500.

Almost surely, 2^111212022000 is an apocalyptic number.

111212022000 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 111212022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179809018272).

111212022000 is an abundant number, since it is smaller than the sum of its proper divisors (248406014544).

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

111212022000 is a wasteful number, since it uses less digits than its factorization.

111212022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55364 (or 55348 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111212022000 its reverse (220212111), we get a palindrome (111432234111).

The spelling of 111212022000 in words is "one hundred eleven billion, two hundred twelve million, twenty-two thousand".