20101211203020 has 96 divisors (see below), whose sum is σ = 57856044626688. Its totient is φ = 5210804535552.

The previous prime is 20101211203001. The next prime is 20101211203033. The reversal of 20101211203020 is 2030211210102.

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

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, 1538374 + ... + 6524493.

It is an arithmetic number, because the mean of its divisors is an integer number (602667131528).

Almost surely, 2^{20101211203020} is an apocalyptic number.

20101211203020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101211203020 is an abundant number, since it is smaller than the sum of its proper divisors (37754833423668).

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

20101211203020 is a wasteful number, since it uses less digits than its factorization.

20101211203020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8064039 (or 8064037 counting only the distinct ones).

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

Adding to 20101211203020 its reverse (2030211210102), we get a palindrome (22131422413122).

The spelling of 20101211203020 in words is "twenty trillion, one hundred one billion, two hundred eleven million, two hundred three thousand, twenty".