22011220100 has 36 divisors (see below), whose sum is σ = 47776890000. Its totient is φ = 8802176160.

The previous prime is 22011220097. The next prime is 22011220103. The reversal of 22011220100 is 102211022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22011220097) and next prime (22011220103).

It is not an unprimeable number, because it can be changed into a prime (22011220103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 383051 + ... + 436749.

Almost surely, 2^22011220100 is an apocalyptic number.

22011220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011220100 is an abundant number, since it is smaller than the sum of its proper divisors (25765669900).

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

22011220100 is a wasteful number, since it uses less digits than its factorization.

22011220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57812 (or 57805 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22011220100 its reverse (102211022), we get a palindrome (22113431122).

The spelling of 22011220100 in words is "twenty-two billion, eleven million, two hundred twenty thousand, one hundred".