2101231222040 has 16 divisors (see below), whose sum is σ = 4727770249680. Its totient is φ = 840492488800.

The previous prime is 2101231222021. The next prime is 2101231222063. The reversal of 2101231222040 is 402221321012.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26265390236 + ... + 26265390315.

It is an arithmetic number, because the mean of its divisors is an integer number (295485640605).

Almost surely, 2^{2101231222040} is an apocalyptic number.

2101231222040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101231222040 is an abundant number, since it is smaller than the sum of its proper divisors (2626539027640).

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

2101231222040 is a wasteful number, since it uses less digits than its factorization.

2101231222040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52530780562 (or 52530780558 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2101231222040 its reverse (402221321012), we get a palindrome (2503452543052).

The spelling of 2101231222040 in words is "two trillion, one hundred one billion, two hundred thirty-one million, two hundred twenty-two thousand, forty".