101020121001111 has 64 divisors (see below), whose sum is σ = 153440802902016. Its totient is φ = 58672462924800.

The previous prime is 101020121001097. The next prime is 101020121001143. The reversal of 101020121001111 is 111100121020101.

It is a de Polignac number, because none of the positive numbers 2^k-101020121001111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020121001161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 138280180 + ... + 139008806.

It is an arithmetic number, because the mean of its divisors is an integer number (2397512545344).

Almost surely, 2^{101020121001111} is an apocalyptic number.

101020121001111 is a deficient number, since it is larger than the sum of its proper divisors (52420681900905).

101020121001111 is a wasteful number, since it uses less digits than its factorization.

101020121001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731512.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 101020121001111 its reverse (111100121020101), we get a palindrome (212120242021212).

The spelling of 101020121001111 in words is "one hundred one trillion, twenty billion, one hundred twenty-one million, one thousand, one hundred eleven".