20101211011102 has 32 divisors (see below), whose sum is σ = 33626648297088. Its totient is φ = 8952549139296.

The previous prime is 20101211010983. The next prime is 20101211011103. The reversal of 20101211011102 is 20111011210102.

It is a happy number.

It is a super-2 number, since 2×20101211011102² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101211011103) 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, 108218148 + ... + 108403735.

It is an arithmetic number, because the mean of its divisors is an integer number (1050832759284).

Almost surely, 2^{20101211011102} is an apocalyptic number.

20101211011102 is a deficient number, since it is larger than the sum of its proper divisors (13525437285986).

20101211011102 is a wasteful number, since it uses less digits than its factorization.

20101211011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216622024.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20101211011102 its reverse (20111011210102), we get a palindrome (40212222221204).

The spelling of 20101211011102 in words is "twenty trillion, one hundred one billion, two hundred eleven million, eleven thousand, one hundred two".