2122331561550 has 96 divisors (see below), whose sum is σ = 6049864792800. Its totient is φ = 546439380480.

The previous prime is 2122331561461. The next prime is 2122331561573. The reversal of 2122331561550 is 551651332212.

2122331561550 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 3 + 31 + 5 + 615 + 5 + 0 = 666.

It is a super-2 number, since 2×2122331561550² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 27065979 + ... + 27144278.

It is an arithmetic number, because the mean of its divisors is an integer number (63019424925).

Almost surely, 2^{2122331561550} is an apocalyptic number.

2122331561550 is an abundant number, since it is smaller than the sum of its proper divisors (3927533231250).

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

2122331561550 is a wasteful number, since it uses less digits than its factorization.

2122331561550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54210307 (or 54210296 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 2122331561550 its reverse (551651332212), we get a palindrome (2673982893762).

The spelling of 2122331561550 in words is "two trillion, one hundred twenty-two billion, three hundred thirty-one million, five hundred sixty-one thousand, five hundred fifty".