2211020100020 has 24 divisors (see below), whose sum is σ = 4661640795168. Its totient is φ = 880884500000.

The previous prime is 2211020100017. The next prime is 2211020100073. The reversal of 2211020100020 is 200010201122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2211020099974 and 2211020100010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220216106 + ... + 220226145.

It is an arithmetic number, because the mean of its divisors is an integer number (194235033132).

Almost surely, 2^{2211020100020} is an apocalyptic number.

2211020100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211020100020 is an abundant number, since it is smaller than the sum of its proper divisors (2450620695148).

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

2211020100020 is a wasteful number, since it uses less digits than its factorization.

2211020100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440442511 (or 440442509 counting only the distinct ones).

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

Adding to 2211020100020 its reverse (200010201122), we get a palindrome (2411030301142).

The spelling of 2211020100020 in words is "two trillion, two hundred eleven billion, twenty million, one hundred thousand, twenty".