1011211230220 has 12 divisors (see below), whose sum is σ = 2123543583504. Its totient is φ = 404484492080.

The previous prime is 1011211230143. The next prime is 1011211230223. The reversal of 1011211230220 is 220321121101.

1011211230220 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 = 1011211230194 and 1011211230203.

It is not an unprimeable number, because it can be changed into a prime (1011211230223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25280280736 + ... + 25280280775.

It is an arithmetic number, because the mean of its divisors is an integer number (176961965292).

Almost surely, 2^{1011211230220} is an apocalyptic number.

1011211230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011211230220 is an abundant number, since it is smaller than the sum of its proper divisors (1112332353284).

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

1011211230220 is a wasteful number, since it uses less digits than its factorization.

1011211230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50560561520 (or 50560561518 counting only the distinct ones).

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

Adding to 1011211230220 its reverse (220321121101), we get a palindrome (1231532351321).

The spelling of 1011211230220 in words is "one trillion, eleven billion, two hundred eleven million, two hundred thirty thousand, two hundred twenty".