22120001002000 has 160 divisors (see below), whose sum is σ = 60885435297024. Its totient is φ = 7693913216000.

The previous prime is 22120001001997. The next prime is 22120001002009. The reversal of 22120001002000 is 20010002122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (22120001002009) 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, 21351709 + ... + 22363708.

Almost surely, 2^{22120001002000} is an apocalyptic number.

22120001002000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120001002000 is an abundant number, since it is smaller than the sum of its proper divisors (38765434295024).

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

22120001002000 is a wasteful number, since it uses less digits than its factorization.

22120001002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43715474 (or 43715458 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22120001002000 its reverse (20010002122), we get a palindrome (22140011004122).

The spelling of 22120001002000 in words is "twenty-two trillion, one hundred twenty billion, one million, two thousand".