1000111222020 has 24 divisors (see below), whose sum is σ = 2800311421824. Its totient is φ = 266696325856.

The previous prime is 1000111222009. The next prime is 1000111222031. The reversal of 1000111222020 is 202221110001.

It is an interprime number because it is at equal distance from previous prime (1000111222009) and next prime (1000111222031).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1000111221987 and 1000111222005.

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, 8334260124 + ... + 8334260243.

It is an arithmetic number, because the mean of its divisors is an integer number (116679642576).

Almost surely, 2^{1000111222020} is an apocalyptic number.

1000111222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000111222020 is an abundant number, since it is smaller than the sum of its proper divisors (1800200199804).

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

1000111222020 is a wasteful number, since it uses less digits than its factorization.

1000111222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16668520379 (or 16668520377 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1000111222020 its reverse (202221110001), we get a palindrome (1202332332021).

The spelling of 1000111222020 in words is "one trillion, one hundred eleven million, two hundred twenty-two thousand, twenty".