2111211012220 has 48 divisors (see below), whose sum is σ = 4639411909440. Its totient is φ = 805479335936.

The previous prime is 2111211012217. The next prime is 2111211012223. The reversal of 2111211012220 is 222101121112.

It is an interprime number because it is at equal distance from previous prime (2111211012217) and next prime (2111211012223).

It is a junction number, because it is equal to n+sod(n) for n = 2111211012194 and 2111211012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111211012223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6338455 + ... + 6663214.

It is an arithmetic number, because the mean of its divisors is an integer number (96654414780).

Almost surely, 2^{2111211012220} is an apocalyptic number.

2111211012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111211012220 is an abundant number, since it is smaller than the sum of its proper divisors (2528200897220).

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

2111211012220 is a wasteful number, since it uses less digits than its factorization.

2111211012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13002054 (or 13002052 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2111211012220 its reverse (222101121112), we get a palindrome (2333312133332).

The spelling of 2111211012220 in words is "two trillion, one hundred eleven billion, two hundred eleven million, twelve thousand, two hundred twenty".