2122201551546 has 48 divisors (see below), whose sum is σ = 4748808549888. Its totient is φ = 684237981600.

The previous prime is 2122201551539. The next prime is 2122201551553. The reversal of 2122201551546 is 6451551022212.

2122201551546 is a `hidden beast` number, since 2 + 122 + 2 + 0 + 15 + 515 + 4 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (2122201551539) and next prime (2122201551553).

It is a self number, because there is not a number n which added to its sum of digits gives 2122201551546.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162091 + ... + 2066561.

It is an arithmetic number, because the mean of its divisors is an integer number (98933511456).

Almost surely, 2^{2122201551546} is an apocalyptic number.

2122201551546 is an abundant number, since it is smaller than the sum of its proper divisors (2626606998342).

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

2122201551546 is a wasteful number, since it uses less digits than its factorization.

2122201551546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906507 (or 1906504 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 2122201551546 its reverse (6451551022212), we get a palindrome (8573752573758).

The spelling of 2122201551546 in words is "two trillion, one hundred twenty-two billion, two hundred one million, five hundred fifty-one thousand, five hundred forty-six".