1202213123 has 6 divisors (see below), whose sum is σ = 1277091756. Its totient is φ = 1131494432.

The previous prime is 1202213113. The next prime is 1202213147. The reversal of 1202213123 is 3213122021.

It is not a de Polignac number, because 1202213123 - 2¹⁸ = 1201950979 is a prime.

It is a super-2 number, since 2×1202213123² = 2890632786226826258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202213113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2079665 + ... + 2080242.

It is an arithmetic number, because the mean of its divisors is an integer number (212848626).

Almost surely, 2^1202213123 is an apocalyptic number.

1202213123 is a deficient number, since it is larger than the sum of its proper divisors (74878633).

1202213123 is an equidigital number, since it uses as much as digits as its factorization.

1202213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159941 (or 4159924 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1202213123 is about 34672.9451157527. The cubic root of 1202213123 is about 1063.3114441325.

Adding to 1202213123 its reverse (3213122021), we get a palindrome (4415335144).

The spelling of 1202213123 in words is "one billion, two hundred two million, two hundred thirteen thousand, one hundred twenty-three".