201001210001020 has 96 divisors (see below), whose sum is σ = 496105331230656. Its totient is φ = 67440551270400.

The previous prime is 201001210001017. The next prime is 201001210001077. The reversal of 201001210001020 is 20100012100102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 201001210000988 and 201001210001006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7985151 + ... + 21581590.

It is an arithmetic number, because the mean of its divisors is an integer number (5167763866986).

Almost surely, 2^{201001210001020} is an apocalyptic number.

201001210001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201001210001020 is an abundant number, since it is smaller than the sum of its proper divisors (295104121229636).

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

201001210001020 is a wasteful number, since it uses less digits than its factorization.

201001210001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29569151 (or 29569149 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201001210001020 its reverse (20100012100102), we get a palindrome (221101222101122).

The spelling of 201001210001020 in words is "two hundred one trillion, one billion, two hundred ten million, one thousand, twenty".