20111011001002 has 16 divisors (see below), whose sum is σ = 30598230738600. Its totient is φ = 9912470270400.

The previous prime is 20111011000981. The next prime is 20111011001017. The reversal of 20111011001002 is 20010011011102.

It can be written as a sum of positive squares in 4 ways, for example, as 14720121095761 + 5390889905241 = 3836681^2 + 2321829^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20111011001002.

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, 217332477 + ... + 217424992.

Almost surely, 2^{20111011001002} is an apocalyptic number.

20111011001002 is a deficient number, since it is larger than the sum of its proper divisors (10487219737598).

20111011001002 is a wasteful number, since it uses less digits than its factorization.

20111011001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434757801.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20111011001002 its reverse (20010011011102), we get a palindrome (40121022012104).

It can be divided in two parts, 2011101 and 1001002, that added together give a palindrome (3012103).

The spelling of 20111011001002 in words is "twenty trillion, one hundred eleven billion, eleven million, one thousand, two".