20101204226 has 16 divisors (see below), whose sum is σ = 32362780824. Its totient is φ = 9329808384.

The previous prime is 20101204213. The next prime is 20101204247. The reversal of 20101204226 is 62240210102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19660246225 + 440958001 = 140215^2 + 20999^2 .

It is a super-2 number, since 2×20101204226² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20101204198 and 20101204207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4046915 + ... + 4051878.

Almost surely, 2^20101204226 is an apocalyptic number.

20101204226 is a deficient number, since it is larger than the sum of its proper divisors (12261576598).

20101204226 is a wasteful number, since it uses less digits than its factorization.

20101204226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8098885.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20101204226 its reverse (62240210102), we get a palindrome (82341414328).

The spelling of 20101204226 in words is "twenty billion, one hundred one million, two hundred four thousand, two hundred twenty-six".