101212021101021 has 16 divisors (see below), whose sum is σ = 135218744997120. Its totient is φ = 67339997318720.

The previous prime is 101212021101011. The next prime is 101212021101067. The reversal of 101212021101021 is 120101120212101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101212021101021 - 2⁷ = 101212021100893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212021101011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48235276 + ... + 50289818.

It is an arithmetic number, because the mean of its divisors is an integer number (8451171562320).

Almost surely, 2^{101212021101021} is an apocalyptic number.

It is an amenable number.

101212021101021 is a deficient number, since it is larger than the sum of its proper divisors (34006723896099).

101212021101021 is a wasteful number, since it uses less digits than its factorization.

101212021101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087316.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101212021101021 its reverse (120101120212101), we get a palindrome (221313141313122).

The spelling of 101212021101021 in words is "one hundred one trillion, two hundred twelve billion, twenty-one million, one hundred one thousand, twenty-one".