20120202011 has 16 divisors (see below), whose sum is σ = 25018628544. Its totient is φ = 15755157504.

The previous prime is 20120201999. The next prime is 20120202031. The reversal of 20120202011 is 11020202102.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120202011 is a prime.

It is a super-3 number, since 3×20120202011³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20120201983 and 20120202001.

It is not an unprimeable number, because it can be changed into a prime (20120202031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1130870 + ... + 1148523.

It is an arithmetic number, because the mean of its divisors is an integer number (1563664284).

Almost surely, 2^20120202011 is an apocalyptic number.

20120202011 is a deficient number, since it is larger than the sum of its proper divisors (4898426533).

20120202011 is a wasteful number, since it uses less digits than its factorization.

20120202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279510.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20120202011 its reverse (11020202102), we get a palindrome (31140404113).

Subtracting from 20120202011 its reverse (11020202102), we obtain a palindrome (9099999909).

The spelling of 20120202011 in words is "twenty billion, one hundred twenty million, two hundred two thousand, eleven".