2211220135124 has 192 divisors, whose sum is σ = 5219934720000. Its totient is φ = 791528371200.

The previous prime is 2211220135001. The next prime is 2211220135141. The reversal of 2211220135124 is 4215310221122.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 2211220135093 and 2211220135102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 877118984 + ... + 877121504.

It is an arithmetic number, because the mean of its divisors is an integer number (27187160000).

Almost surely, 2^{2211220135124} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211220135124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2609967360000).

2211220135124 is an abundant number, since it is smaller than the sum of its proper divisors (3008714584876).

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

2211220135124 is a wasteful number, since it uses less digits than its factorization.

2211220135124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494 (or 3492 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 2211220135124 its reverse (4215310221122), we get a palindrome (6426530356246).

The spelling of 2211220135124 in words is "two trillion, two hundred eleven billion, two hundred twenty million, one hundred thirty-five thousand, one hundred twenty-four".