10101220000 has 60 divisors (see below), whose sum is σ = 24850565586. Its totient is φ = 4040480000.

The previous prime is 10101219937. The next prime is 10101220007. The reversal of 10101220000 is 2210101.

It can be written as a sum of positive squares in 5 ways, for example, as 1974558096 + 8126661904 = 44436^2 + 90148^2 .

It is not an unprimeable number, because it can be changed into a prime (10101220007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 232531 + ... + 272530.

Almost surely, 2^10101220000 is an apocalyptic number.

10101220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10101220000 is an abundant number, since it is smaller than the sum of its proper divisors (14749345586).

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

10101220000 is an frugal number, since it uses more digits than its factorization.

10101220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505091 (or 505068 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10101220000 its reverse (2210101), we get a palindrome (10103430101).

The spelling of 10101220000 in words is "ten billion, one hundred one million, two hundred twenty thousand".