20011012221010 has 16 divisors (see below), whose sum is σ = 36030894857496. Its totient is φ = 8001944252928.

The previous prime is 20011012220887. The next prime is 20011012221049. The reversal of 20011012221010 is 1012221011002.

It can be written as a sum of positive squares in 4 ways, for example, as 19813653270009 + 197358951001 = 4451253^2 + 444251^2 .

It is a super-2 number, since 2×20011012221010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 307545279 + ... + 307610338.

Almost surely, 2^{20011012221010} is an apocalyptic number.

20011012221010 is a deficient number, since it is larger than the sum of its proper divisors (16019882636486).

20011012221010 is a wasteful number, since it uses less digits than its factorization.

20011012221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615158877.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20011012221010 its reverse (1012221011002), we get a palindrome (21023233232012).

The spelling of 20011012221010 in words is "twenty trillion, eleven billion, twelve million, two hundred twenty-one thousand, ten".