1001210020000 has 60 divisors (see below), whose sum is σ = 2463126879906. Its totient is φ = 400484000000.

The previous prime is 1001210019991. The next prime is 1001210020061. The reversal of 1001210020000 is 200121001.

It can be written as a sum of positive squares in 5 ways, for example, as 162967230864 + 838242789136 = 403692^2 + 915556^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25010251 + ... + 25050250.

Almost surely, 2^{1001210020000} is an apocalyptic number.

1001210020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001210020000 is an abundant number, since it is smaller than the sum of its proper divisors (1461916859906).

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

1001210020000 is an frugal number, since it uses more digits than its factorization.

1001210020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50060531 (or 50060508 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 1001210020000 its reverse (200121001), we get a palindrome (1001410141001).

The spelling of 1001210020000 in words is "one trillion, one billion, two hundred ten million, twenty thousand".