10310111121220 has 12 divisors (see below), whose sum is σ = 21651233354604. Its totient is φ = 4124044448480.

The previous prime is 10310111121217. The next prime is 10310111121253. The reversal of 10310111121220 is 2212111101301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1149767241984 + 9160343879236 = 1072272^2 + 3026606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10310111121194 and 10310111121203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257752778011 + ... + 257752778050.

It is an arithmetic number, because the mean of its divisors is an integer number (1804269446217).

Almost surely, 2^{10310111121220} is an apocalyptic number.

10310111121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10310111121220 is an abundant number, since it is smaller than the sum of its proper divisors (11341122233384).

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

10310111121220 is a wasteful number, since it uses less digits than its factorization.

10310111121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515505556070 (or 515505556068 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 10310111121220 its reverse (2212111101301), we get a palindrome (12522222222521).

The spelling of 10310111121220 in words is "ten trillion, three hundred ten billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twenty".