100012011101021 has 4 divisors (see below), whose sum is σ = 100049148872412. Its totient is φ = 99974873329632.

The previous prime is 100012011101003. The next prime is 100012011101029. The reversal of 100012011101021 is 120101110210001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46844784705625 + 53167226395396 = 6844325^2 + 7291586^2 .

It is a cyclic number.

It is not a de Polignac number, because 100012011101021 - 2³⁰ = 100010937359197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100012011100993 and 100012011101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012011101029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18568881656 + ... + 18568887041.

It is an arithmetic number, because the mean of its divisors is an integer number (25012287218103).

Almost surely, 2^{100012011101021} is an apocalyptic number.

It is an amenable number.

100012011101021 is a deficient number, since it is larger than the sum of its proper divisors (37137771391).

100012011101021 is an equidigital number, since it uses as much as digits as its factorization.

100012011101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37137771390.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 100012011101021 its reverse (120101110210001), we get a palindrome (220113121311022).

The spelling of 100012011101021 in words is "one hundred trillion, twelve billion, eleven million, one hundred one thousand, twenty-one".