1201021010000 has 100 divisors (see below), whose sum is σ = 3323191013472. Its totient is φ = 411778608000.

The previous prime is 1201021009997. The next prime is 1201021010089. The reversal of 1201021010000 is 101201021.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×1201021010000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1201021010000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8508722 + ... + 8648721.

Almost surely, 2^{1201021010000} is an apocalyptic number.

1201021010000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201021010000 is an abundant number, since it is smaller than the sum of its proper divisors (2122170003472).

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

1201021010000 is an equidigital number, since it uses as much as digits as its factorization.

1201021010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17157478 (or 17157457 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1201021010000 its reverse (101201021), we get a palindrome (1201122211021).

The spelling of 1201021010000 in words is "one trillion, two hundred one billion, twenty-one million, ten thousand".