2211021220100 has 144 divisors (see below), whose sum is σ = 6296650321920. Its totient is φ = 652878403200.

The previous prime is 2211021220097. The next prime is 2211021220117. The reversal of 2211021220100 is 10221201122.

It is a super-2 number, since 2×2211021220100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7410164 + ... + 7702763.

Almost surely, 2^{2211021220100} is an apocalyptic number.

2211021220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211021220100 is an abundant number, since it is smaller than the sum of its proper divisors (4085629101820).

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

2211021220100 is a wasteful number, since it uses less digits than its factorization.

2211021220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15112978 (or 15112971 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2211021220100 its reverse (10221201122), we get a palindrome (2221242421222).

The spelling of 2211021220100 in words is "two trillion, two hundred eleven billion, twenty-one million, two hundred twenty thousand, one hundred".