1011312333220 has 24 divisors (see below), whose sum is σ = 2427149600064. Its totient is φ = 346735657056.

The previous prime is 1011312333211. The next prime is 1011312333319. The reversal of 1011312333220 is 223332131101.

It is a junction number, because it is equal to n+sod(n) for n = 1011312333191 and 1011312333200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3611829622 + ... + 3611829901.

It is an arithmetic number, because the mean of its divisors is an integer number (101131233336).

Almost surely, 2^{1011312333220} is an apocalyptic number.

1011312333220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011312333220 is an abundant number, since it is smaller than the sum of its proper divisors (1415837266844).

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

1011312333220 is a wasteful number, since it uses less digits than its factorization.

1011312333220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7223659539 (or 7223659537 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1011312333220 its reverse (223332131101), we get a palindrome (1234644464321).

The spelling of 1011312333220 in words is "one trillion, eleven billion, three hundred twelve million, three hundred thirty-three thousand, two hundred twenty".