2101211110220 has 12 divisors (see below), whose sum is σ = 4412543331504. Its totient is φ = 840484444080.

The previous prime is 2101211110213. The next prime is 2101211110223. The reversal of 2101211110220 is 220111121012.

It is a junction number, because it is equal to n+sod(n) for n = 2101211110195 and 2101211110204.

It is not an unprimeable number, because it can be changed into a prime (2101211110223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52530277736 + ... + 52530277775.

It is an arithmetic number, because the mean of its divisors is an integer number (367711944292).

Almost surely, 2^{2101211110220} is an apocalyptic number.

2101211110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101211110220 is an abundant number, since it is smaller than the sum of its proper divisors (2311332221284).

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

2101211110220 is a wasteful number, since it uses less digits than its factorization.

2101211110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105060555520 (or 105060555518 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2101211110220 its reverse (220111121012), we get a palindrome (2321322231232).

The spelling of 2101211110220 in words is "two trillion, one hundred one billion, two hundred eleven million, one hundred ten thousand, two hundred twenty".