1001211022100 has 36 divisors (see below), whose sum is σ = 2173242249948. Its totient is φ = 400371168000.

The previous prime is 1001211022081. The next prime is 1001211022111. The reversal of 1001211022100 is 12201121001.

1001211022100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 147605029636 + 853605992464 = 384194^2 + 923908^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1059641 + ... + 1767840.

Almost surely, 2^{1001211022100} is an apocalyptic number.

1001211022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001211022100 is an abundant number, since it is smaller than the sum of its proper divisors (1172031227848).

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

1001211022100 is a wasteful number, since it uses less digits than its factorization.

1001211022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831036 (or 2831029 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1001211022100 its reverse (12201121001), we get a palindrome (1013412143101).

The spelling of 1001211022100 in words is "one trillion, one billion, two hundred eleven million, twenty-two thousand, one hundred".