1012001000220 has 72 divisors (see below), whose sum is σ = 3508270138464. Its totient is φ = 231314514048.

The previous prime is 1012001000209. The next prime is 1012001000233. The reversal of 1012001000220 is 220001002101.

It is a super-3 number, since 3×1012001000220³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401586439 + ... + 401588958.

Almost surely, 2^{1012001000220} is an apocalyptic number.

1012001000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012001000220 is an abundant number, since it is smaller than the sum of its proper divisors (2496269138244).

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

1012001000220 is a wasteful number, since it uses less digits than its factorization.

1012001000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803175419 (or 803175414 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1012001000220 its reverse (220001002101), we get a palindrome (1232002002321).

The spelling of 1012001000220 in words is "one trillion, twelve billion, one million, two hundred twenty", and thus it is an aban number.