1011211220120 has 64 divisors (see below), whose sum is σ = 2280694004640. Its totient is φ = 403512883200.

The previous prime is 1011211220111. The next prime is 1011211220147. The reversal of 1011211220120 is 210221121101.

1011211220120 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 = 1011211220095 and 1011211220104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65059550 + ... + 65075090.

Almost surely, 2^{1011211220120} is an apocalyptic number.

1011211220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011211220120 is an abundant number, since it is smaller than the sum of its proper divisors (1269482784520).

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

1011211220120 is a wasteful number, since it uses less digits than its factorization.

1011211220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19356 (or 19352 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011211220120 its reverse (210221121101), we get a palindrome (1221432341221).

The spelling of 1011211220120 in words is "one trillion, eleven billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty".