1212401269 has 2 divisors, whose sum is σ = 1212401270. Its totient is φ = 1212401268.

The previous prime is 1212401263. The next prime is 1212401321. The reversal of 1212401269 is 9621042121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 932508369 + 279892900 = 30537^2 + 16730^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212401269 - 2¹⁷ = 1212270197 is a prime.

It is a super-2 number, since 2×1212401269² = 2939833674145620722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212401263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606200634 + 606200635.

It is an arithmetic number, because the mean of its divisors is an integer number (606200635).

Almost surely, 2^1212401269 is an apocalyptic number.

It is an amenable number.

1212401269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212401269 is an equidigital number, since it uses as much as digits as its factorization.

1212401269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1212401269 is about 34819.5529695601. The cubic root of 1212401269 is about 1066.3066739070.

The spelling of 1212401269 in words is "one billion, two hundred twelve million, four hundred one thousand, two hundred sixty-nine".