1031211220120 has 32 divisors (see below), whose sum is σ = 2421104605920. Its totient is φ = 394550379520.

The previous prime is 1031211220111. The next prime is 1031211220121. The reversal of 1031211220120 is 210221121301.

1031211220120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1031211220094 and 1031211220103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031211220121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560439961 + ... + 560441800.

It is an arithmetic number, because the mean of its divisors is an integer number (75659518935).

Almost surely, 2^{1031211220120} is an apocalyptic number.

1031211220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031211220120 is an abundant number, since it is smaller than the sum of its proper divisors (1389893385800).

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

1031211220120 is a wasteful number, since it uses less digits than its factorization.

1031211220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120881795 (or 1120881791 counting only the distinct ones).

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

Adding to 1031211220120 its reverse (210221121301), we get a palindrome (1241432341421).

The spelling of 1031211220120 in words is "one trillion, thirty-one billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty".