102012221001 has 16 divisors (see below), whose sum is σ = 137984451264. Its totient is φ = 67030522944.

The previous prime is 102012220993. The next prime is 102012221009. The reversal of 102012221001 is 100122210201.

It is an interprime number because it is at equal distance from previous prime (102012220993) and next prime (102012221009).

It is not a de Polignac number, because 102012221001 - 2³ = 102012220993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102012221009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743350 + ... + 869823.

It is an arithmetic number, because the mean of its divisors is an integer number (8624028204).

Almost surely, 2^102012221001 is an apocalyptic number.

It is an amenable number.

102012221001 is a deficient number, since it is larger than the sum of its proper divisors (35972230263).

102012221001 is a wasteful number, since it uses less digits than its factorization.

102012221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613480.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102012221001 its reverse (100122210201), we get a palindrome (202134431202).

The spelling of 102012221001 in words is "one hundred two billion, twelve million, two hundred twenty-one thousand, one".