1212972941 has 2 divisors, whose sum is σ = 1212972942. Its totient is φ = 1212972940.

The previous prime is 1212972913. The next prime is 1212972953. The reversal of 1212972941 is 1492792121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1180197316 + 32775625 = 34354^2 + 5725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212972941 - 2⁶ = 1212972877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212972895 and 1212972904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212972041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606486470 + 606486471.

It is an arithmetic number, because the mean of its divisors is an integer number (606486471).

Almost surely, 2^1212972941 is an apocalyptic number.

It is an amenable number.

1212972941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212972941 is an equidigital number, since it uses as much as digits as its factorization.

1212972941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 1212972941 is about 34827.7610678608. The cubic root of 1212972941 is about 1066.4742427090.

The spelling of 1212972941 in words is "one billion, two hundred twelve million, nine hundred seventy-two thousand, nine hundred forty-one".