1011002202221 has 12 divisors (see below), whose sum is σ = 1111923497916. Its totient is φ = 918549846720.

The previous prime is 1011002202139. The next prime is 1011002202229. The reversal of 1011002202221 is 1222022001101.

It can be written as a sum of positive squares in 2 ways, for example, as 398874349225 + 612127852996 = 631565^2 + 782386^2 .

It is not a de Polignac number, because 1011002202221 - 2³⁰ = 1009928460397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011002202196 and 1011002202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011002202229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2262776 + ... + 2672481.

It is an arithmetic number, because the mean of its divisors is an integer number (92660291493).

Almost surely, 2^{1011002202221} is an apocalyptic number.

1011002202221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011002202221 is a deficient number, since it is larger than the sum of its proper divisors (100921295695).

1011002202221 is a wasteful number, since it uses less digits than its factorization.

1011002202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936972 (or 4936961 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1011002202221 its reverse (1222022001101), we get a palindrome (2233024203322).

The spelling of 1011002202221 in words is "one trillion, eleven billion, two million, two hundred two thousand, two hundred twenty-one".