20012111002 has 24 divisors (see below), whose sum is σ = 32563541916. Its totient is φ = 9219689856.

The previous prime is 20012110991. The next prime is 20012111023. The reversal of 20012111002 is 20011121002.

It can be written as a sum of positive squares in 6 ways, for example, as 957345481 + 19054765521 = 30941^2 + 138039^2 .

It is a super-3 number, since 3×20012111002³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20012111002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135118 + ... + 241414.

Almost surely, 2^20012111002 is an apocalyptic number.

20012111002 is a deficient number, since it is larger than the sum of its proper divisors (12551430914).

20012111002 is a wasteful number, since it uses less digits than its factorization.

20012111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106882 (or 106869 counting only the distinct ones).

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

Adding to 20012111002 its reverse (20011121002), we get a palindrome (40023232004).

The spelling of 20012111002 in words is "twenty billion, twelve million, one hundred eleven thousand, two".