1213210023 has 8 divisors (see below), whose sum is σ = 1618711536. Its totient is φ = 808257600.

The previous prime is 1213210007. The next prime is 1213210039. The reversal of 1213210023 is 3200123121.

It is an interprime number because it is at equal distance from previous prime (1213210007) and next prime (1213210039).

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

It is not a de Polignac number, because 1213210023 - 2⁴ = 1213210007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213209984 and 1213210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213210073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132088 + ... + 140973.

It is an arithmetic number, because the mean of its divisors is an integer number (202338942).

Almost surely, 2^1213210023 is an apocalyptic number.

1213210023 is a deficient number, since it is larger than the sum of its proper divisors (405501513).

1213210023 is a wasteful number, since it uses less digits than its factorization.

1213210023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274545.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1213210023 is about 34831.1645369488. The cubic root of 1213210023 is about 1066.5437208665.

Adding to 1213210023 its reverse (3200123121), we get a palindrome (4413333144).

It can be divided in two parts, 12132 and 10023, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 1213210023 in words is "one billion, two hundred thirteen million, two hundred ten thousand, twenty-three".