102021211001 has 2 divisors, whose sum is σ = 102021211002. Its totient is φ = 102021211000.

The previous prime is 102021210971. The next prime is 102021211049. The reversal of 102021211001 is 100112120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67257235600 + 34763975401 = 259340^2 + 186451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102021211001 is a prime.

It is a super-2 number, since 2×102021211001² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102021211091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010605500 + 51010605501.

It is an arithmetic number, because the mean of its divisors is an integer number (51010605501).

Almost surely, 2^102021211001 is an apocalyptic number.

It is an amenable number.

102021211001 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021211001 is an equidigital number, since it uses as much as digits as its factorization.

102021211001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102021211001 its reverse (100112120201), we get a palindrome (202133331202).

The spelling of 102021211001 in words is "one hundred two billion, twenty-one million, two hundred eleven thousand, one".