10101221203120 has 40 divisors (see below), whose sum is σ = 23717867428080. Its totient is φ = 4000483641600.

The previous prime is 10101221203093. The next prime is 10101221203187. The reversal of 10101221203120 is 2130212210101.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×10101221203120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 10101221203094 and 10101221203103.

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, 625067490 + ... + 625083649.

It is an arithmetic number, because the mean of its divisors is an integer number (592946685702).

Almost surely, 2^{10101221203120} is an apocalyptic number.

10101221203120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10101221203120 is an abundant number, since it is smaller than the sum of its proper divisors (13616646224960).

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

10101221203120 is a wasteful number, since it uses less digits than its factorization.

10101221203120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250151253 (or 1250151247 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10101221203120 its reverse (2130212210101), we get a palindrome (12231433413221).

The spelling of 10101221203120 in words is "ten trillion, one hundred one billion, two hundred twenty-one million, two hundred three thousand, one hundred twenty".