102012011211021 has 16 divisors (see below), whose sum is σ = 136092833769984. Its totient is φ = 67969599280704.

The previous prime is 102012011210999. The next prime is 102012011211031. The reversal of 102012011211021 is 120112110210201.

It is a happy number.

It is not a de Polignac number, because 102012011211021 - 2⁹ = 102012011210509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012011211031) 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 15 ways as a sum of consecutive naturals, for example, 471303195 + ... + 471519591.

It is an arithmetic number, because the mean of its divisors is an integer number (8505802110624).

Almost surely, 2^{102012011211021} is an apocalyptic number.

It is an amenable number.

102012011211021 is a deficient number, since it is larger than the sum of its proper divisors (34080822558963).

102012011211021 is a wasteful number, since it uses less digits than its factorization.

102012011211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304420.

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

Adding to 102012011211021 its reverse (120112110210201), we get a palindrome (222124121421222).

The spelling of 102012011211021 in words is "one hundred two trillion, twelve billion, eleven million, two hundred eleven thousand, twenty-one".