102021221210001 has 16 divisors (see below), whose sum is σ = 139733068027968. Its totient is φ = 66162506529600.

The previous prime is 102021221209997. The next prime is 102021221210009. The reversal of 102021221210001 is 100012122120201.

It is not a de Polignac number, because 102021221210001 - 2² = 102021221209997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102021221210009) 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, 92649790 + ... + 93744471.

It is an arithmetic number, because the mean of its divisors is an integer number (8733316751748).

Almost surely, 2^{102021221210001} is an apocalyptic number.

It is an amenable number.

102021221210001 is a deficient number, since it is larger than the sum of its proper divisors (37711846817967).

102021221210001 is a wasteful number, since it uses less digits than its factorization.

102021221210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186399232.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102021221210001 its reverse (100012122120201), we get a palindrome (202033343330202).

The spelling of 102021221210001 in words is "one hundred two trillion, twenty-one billion, two hundred twenty-one million, two hundred ten thousand, one".