10212201121020 has 48 divisors (see below), whose sum is σ = 28595611124640. Its totient is φ = 2723115728896.

The previous prime is 10212201120977. The next prime is 10212201121021. The reversal of 10212201121020 is 2012110221201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212201121021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3112005 + ... + 5487164.

It is an arithmetic number, because the mean of its divisors is an integer number (595741898430).

Almost surely, 2^{10212201121020} is an apocalyptic number.

10212201121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212201121020 is an abundant number, since it is smaller than the sum of its proper divisors (18383410003620).

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

10212201121020 is a wasteful number, since it uses less digits than its factorization.

10212201121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8618974 (or 8618972 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10212201121020 its reverse (2012110221201), we get a palindrome (12224311342221).

The spelling of 10212201121020 in words is "ten trillion, two hundred twelve billion, two hundred one million, one hundred twenty-one thousand, twenty".