102211012221221 has 16 divisors (see below), whose sum is σ = 105560287354368. Its totient is φ = 98865001401600.

The previous prime is 102211012221211. The next prime is 102211012221259. The reversal of 102211012221221 is 122122210112201.

It is not a de Polignac number, because 102211012221221 - 2¹⁴ = 102211012204837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102211012221193 and 102211012221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102211012221211) 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, 1677677666 + ... + 1677738588.

It is an arithmetic number, because the mean of its divisors is an integer number (6597517959648).

Almost surely, 2^{102211012221221} is an apocalyptic number.

It is an amenable number.

102211012221221 is a deficient number, since it is larger than the sum of its proper divisors (3349275133147).

102211012221221 is a wasteful number, since it uses less digits than its factorization.

102211012221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86812.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102211012221221 its reverse (122122210112201), we get a palindrome (224333222333422).

The spelling of 102211012221221 in words is "one hundred two trillion, two hundred eleven billion, twelve million, two hundred twenty-one thousand, two hundred twenty-one".