20201001211320 has 128 divisors (see below), whose sum is σ = 60704198115840. Its totient is φ = 5377940697600.

The previous prime is 20201001211267. The next prime is 20201001211333. The reversal of 20201001211320 is 2311210010202.

It is a super-2 number, since 2×20201001211320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20201001211320.

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, 1234545459 + ... + 1234561821.

It is an arithmetic number, because the mean of its divisors is an integer number (474251547780).

Almost surely, 2^{20201001211320} is an apocalyptic number.

20201001211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201001211320 is an abundant number, since it is smaller than the sum of its proper divisors (40503196904520).

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

20201001211320 is a wasteful number, since it uses less digits than its factorization.

20201001211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32925 (or 32921 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20201001211320 its reverse (2311210010202), we get a palindrome (22512211221522).

The spelling of 20201001211320 in words is "twenty trillion, two hundred one billion, one million, two hundred eleven thousand, three hundred twenty".