1010311221 has 16 divisors (see below), whose sum is σ = 1371064320. Its totient is φ = 661568880.

The previous prime is 1010311153. The next prime is 1010311229. The reversal of 1010311221 is 1221130101.

It is not a de Polignac number, because 1010311221 - 2⁹ = 1010310709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1010311197 and 1010311206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010311229) 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, 388636 + ... + 391226.

It is an arithmetic number, because the mean of its divisors is an integer number (85691520).

Almost surely, 2^1010311221 is an apocalyptic number.

It is an amenable number.

1010311221 is a deficient number, since it is larger than the sum of its proper divisors (360753099).

1010311221 is a wasteful number, since it uses less digits than its factorization.

1010311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4856.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1010311221 is about 31785.3932019096. The cubic root of 1010311221 is about 1003.4253274025.

Adding to 1010311221 its reverse (1221130101), we get a palindrome (2231441322).

The spelling of 1010311221 in words is "one billion, ten million, three hundred eleven thousand, two hundred twenty-one".