2166051021060 has 48 divisors (see below), whose sum is σ = 6150364601472. Its totient is φ = 569478201600.

The previous prime is 2166051020927. The next prime is 2166051021107. The reversal of 2166051021060 is 601201506612.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254227081 + ... + 254235600.

It is an arithmetic number, because the mean of its divisors is an integer number (128132595864).

Almost surely, 2^{2166051021060} is an apocalyptic number.

2166051021060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2166051021060 is an abundant number, since it is smaller than the sum of its proper divisors (3984313580412).

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

2166051021060 is a wasteful number, since it uses less digits than its factorization.

2166051021060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508462764 (or 508462762 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 2166051021060 its reverse (601201506612), we get a palindrome (2767252527672).

The spelling of 2166051021060 in words is "two trillion, one hundred sixty-six billion, fifty-one million, twenty-one thousand, sixty".