1022211021 has 8 divisors (see below), whose sum is σ = 1467790240. Its totient is φ = 629052912.

The previous prime is 1022211017. The next prime is 1022211041. The reversal of 1022211021 is 1201122201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1022211021 - 2² = 1022211017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1022210988 and 1022211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022211041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13105231 + ... + 13105308.

It is an arithmetic number, because the mean of its divisors is an integer number (183473780).

Almost surely, 2^1022211021 is an apocalyptic number.

It is an amenable number.

1022211021 is a deficient number, since it is larger than the sum of its proper divisors (445579219).

1022211021 is a wasteful number, since it uses less digits than its factorization.

1022211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26210555.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1022211021 is about 31972.0349837166. The cubic root of 1022211021 is about 1007.3495258076.

Adding to 1022211021 its reverse (1201122201), we get a palindrome (2223333222).

The spelling of 1022211021 in words is "one billion, twenty-two million, two hundred eleven thousand, twenty-one".