1012011233220 has 144 divisors (see below), whose sum is σ = 3306365479872. Its totient is φ = 249075636480.

The previous prime is 1012011233213. The next prime is 1012011233221. The reversal of 1012011233220 is 223321102101.

1012011233220 is a `hidden beast` number, since 10 + 1 + 201 + 1 + 233 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1012011233193 and 1012011233202.

It is not an unprimeable number, because it can be changed into a prime (1012011233221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19374859 + ... + 19427021.

It is an arithmetic number, because the mean of its divisors is an integer number (22960871388).

Almost surely, 2^{1012011233220} is an apocalyptic number.

1012011233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012011233220 is an abundant number, since it is smaller than the sum of its proper divisors (2294354246652).

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

1012011233220 is a wasteful number, since it uses less digits than its factorization.

1012011233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60482 (or 60477 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1012011233220 its reverse (223321102101), we get a palindrome (1235332335321).

The spelling of 1012011233220 in words is "one trillion, twelve billion, eleven million, two hundred thirty-three thousand, two hundred twenty".