10001211201020 has 24 divisors (see below), whose sum is σ = 22618123793664. Its totient is φ = 3692754904896.

The previous prime is 10001211201001. The next prime is 10001211201077. The reversal of 10001211201020 is 2010211210001.

It is a junction number, because it is equal to n+sod(n) for n = 10001211200992 and 10001211201010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19233098204 + ... + 19233098723.

It is an arithmetic number, because the mean of its divisors is an integer number (942421824736).

Almost surely, 2^{10001211201020} is an apocalyptic number.

10001211201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001211201020 is an abundant number, since it is smaller than the sum of its proper divisors (12616912592644).

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

10001211201020 is a wasteful number, since it uses less digits than its factorization.

10001211201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38466196949 (or 38466196947 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10001211201020 its reverse (2010211210001), we get a palindrome (12011422411021).

The spelling of 10001211201020 in words is "ten trillion, one billion, two hundred eleven million, two hundred one thousand, twenty".