1611202211320 has 64 divisors (see below), whose sum is σ = 3929921835840. Its totient is φ = 590965632000.

The previous prime is 1611202211299. The next prime is 1611202211323. The reversal of 1611202211320 is 231122021161.

It is a super-2 number, since 2×1611202211320² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1611202211291 and 1611202211300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611202211323) 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, 10181301 + ... + 10338340.

It is an arithmetic number, because the mean of its divisors is an integer number (61405028685).

Almost surely, 2^{1611202211320} is an apocalyptic number.

1611202211320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1611202211320 is an abundant number, since it is smaller than the sum of its proper divisors (2318719624520).

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

1611202211320 is a wasteful number, since it uses less digits than its factorization.

1611202211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20519816 (or 20519812 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 1611202211320 its reverse (231122021161), we get a palindrome (1842324232481).

The spelling of 1611202211320 in words is "one trillion, six hundred eleven billion, two hundred two million, two hundred eleven thousand, three hundred twenty".