2101211222130 has 96 divisors (see below), whose sum is σ = 5612189819184. Its totient is φ = 545044267008.

The previous prime is 2101211222129. The next prime is 2101211222141. The reversal of 2101211222130 is 312221121012.

2101211222130 is a `hidden beast` number, since 2 + 101 + 211 + 222 + 130 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 295915328361 + 1805295893769 = 543981^2 + 1343613^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 13753522 + ... + 13905458.

Almost surely, 2^{2101211222130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101211222130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2806094909592).

2101211222130 is an abundant number, since it is smaller than the sum of its proper divisors (3510978597054).

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

2101211222130 is a wasteful number, since it uses less digits than its factorization.

2101211222130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156140 (or 156137 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2101211222130 its reverse (312221121012), we get a palindrome (2413432343142).

The spelling of 2101211222130 in words is "two trillion, one hundred one billion, two hundred eleven million, two hundred twenty-two thousand, one hundred thirty".