102012221011 has 32 divisors (see below), whose sum is σ = 115474439808. Its totient is φ = 89603205120.

The previous prime is 102012221009. The next prime is 102012221033. The reversal of 102012221011 is 110122210201.

It is a cyclic number.

It is not a de Polignac number, because 102012221011 - 2¹ = 102012221009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102012220982 and 102012221000.

It is not an unprimeable number, because it can be changed into a prime (102012221081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3737265 + ... + 3764461.

It is an arithmetic number, because the mean of its divisors is an integer number (3608576244).

Almost surely, 2^102012221011 is an apocalyptic number.

102012221011 is a deficient number, since it is larger than the sum of its proper divisors (13462218797).

102012221011 is a wasteful number, since it uses less digits than its factorization.

102012221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27471.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102012221011 its reverse (110122210201), we get a palindrome (212134431212).

The spelling of 102012221011 in words is "one hundred two billion, twelve million, two hundred twenty-one thousand, eleven".