10211112221020 has 48 divisors (see below), whose sum is σ = 22778665287840. Its totient is φ = 3831661615104.

The previous prime is 10211112220987. The next prime is 10211112221027. The reversal of 10211112221020 is 2012221111201.

It is a junction number, because it is equal to n+sod(n) for n = 10211112220985 and 10211112221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211112221027) 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, 48808785 + ... + 49017544.

It is an arithmetic number, because the mean of its divisors is an integer number (474555526830).

Almost surely, 2^{10211112221020} is an apocalyptic number.

10211112221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10211112221020 is an abundant number, since it is smaller than the sum of its proper divisors (12567553066820).

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

10211112221020 is a wasteful number, since it uses less digits than its factorization.

10211112221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97826662 (or 97826660 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10211112221020 its reverse (2012221111201), we get a palindrome (12223333332221).

The spelling of 10211112221020 in words is "ten trillion, two hundred eleven billion, one hundred twelve million, two hundred twenty-one thousand, twenty".