1011000120220 has 48 divisors (see below), whose sum is σ = 2151543518208. Its totient is φ = 398995272000.

The previous prime is 1011000120199. The next prime is 1011000120233. The reversal of 1011000120220 is 220210001101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1011000120197 and 1011000120206.

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, 841177 + ... + 1652143.

It is an arithmetic number, because the mean of its divisors is an integer number (44823823296).

Almost surely, 2^{1011000120220} is an apocalyptic number.

1011000120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011000120220 is an abundant number, since it is smaller than the sum of its proper divisors (1140543397988).

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

1011000120220 is a wasteful number, since it uses less digits than its factorization.

1011000120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811810 (or 811808 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1011000120220 its reverse (220210001101), we get a palindrome (1231210121321).

The spelling of 1011000120220 in words is "one trillion, eleven billion, one hundred twenty thousand, two hundred twenty".