1901112211102 has 16 divisors (see below), whose sum is σ = 3076641750672. Its totient is φ = 875832310080.

The previous prime is 1901112211099. The next prime is 1901112211109. The reversal of 1901112211102 is 2011122111091.

It is a happy number.

It is a super-2 number, since 2×1901112211102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901112211109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66822799 + ... + 66851242.

It is an arithmetic number, because the mean of its divisors is an integer number (192290109417).

Almost surely, 2^{1901112211102} is an apocalyptic number.

1901112211102 is a deficient number, since it is larger than the sum of its proper divisors (1175529539570).

1901112211102 is a wasteful number, since it uses less digits than its factorization.

1901112211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133674603.

The product of its (nonzero) digits is 72, while the sum is 22.

Adding to 1901112211102 its reverse (2011122111091), we get a palindrome (3912234322193).

The spelling of 1901112211102 in words is "one trillion, nine hundred one billion, one hundred twelve million, two hundred eleven thousand, one hundred two".