212401097 has 2 divisors, whose sum is σ = 212401098. Its totient is φ = 212401096.

The previous prime is 212401073. The next prime is 212401103. The reversal of 212401097 is 790104212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129299641 + 83101456 = 11371^2 + 9116^2 .

It is a cyclic number.

It is not a de Polignac number, because 212401097 - 2¹² = 212397001 is a prime.

It is a super-2 number, since 2×212401097² = 90228452013606818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212401027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106200548 + 106200549.

It is an arithmetic number, because the mean of its divisors is an integer number (106200549).

Almost surely, 2^212401097 is an apocalyptic number.

It is an amenable number.

212401097 is a deficient number, since it is larger than the sum of its proper divisors (1).

212401097 is an equidigital number, since it uses as much as digits as its factorization.

212401097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 212401097 is about 14573.9869973868. The cubic root of 212401097 is about 596.6490019357.

The spelling of 212401097 in words is "two hundred twelve million, four hundred one thousand, ninety-seven".