1000012010120 has 16 divisors (see below), whose sum is σ = 2250027022860. Its totient is φ = 400004804032.

The previous prime is 1000012010021. The next prime is 1000012010131. The reversal of 1000012010120 is 210102100001.

It can be written as a sum of positive squares in 2 ways, for example, as 832667200036 + 167344810084 = 912506^2 + 409078^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 1000012010098 and 1000012010107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12500150087 + ... + 12500150166.

Almost surely, 2^{1000012010120} is an apocalyptic number.

1000012010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000012010120 is an abundant number, since it is smaller than the sum of its proper divisors (1250015012740).

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

1000012010120 is a wasteful number, since it uses less digits than its factorization.

1000012010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000300264 (or 25000300260 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1000012010120 its reverse (210102100001), we get a palindrome (1210114110121).

The spelling of 1000012010120 in words is "one trillion, twelve million, ten thousand, one hundred twenty".