1021222123 has 4 divisors (see below), whose sum is σ = 1033526088. Its totient is φ = 1008918160.

The previous prime is 1021222087. The next prime is 1021222133. The reversal of 1021222123 is 3212221201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3212221201 = 7 ⋅458888743.

It is a cyclic number.

It is not a de Polignac number, because 1021222123 - 2¹³ = 1021213931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021222097 and 1021222106.

It is not an unprimeable number, because it can be changed into a prime (1021222133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6151858 + ... + 6152023.

It is an arithmetic number, because the mean of its divisors is an integer number (258381522).

Almost surely, 2^1021222123 is an apocalyptic number.

1021222123 is a deficient number, since it is larger than the sum of its proper divisors (12303965).

1021222123 is an equidigital number, since it uses as much as digits as its factorization.

1021222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12303964.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1021222123 is about 31956.5661953846. The cubic root of 1021222123 is about 1007.0245807236.

Adding to 1021222123 its reverse (3212221201), we get a palindrome (4233443324).

The spelling of 1021222123 in words is "one billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty-three".