103212001997 has 4 divisors (see below), whose sum is σ = 111151386780. Its totient is φ = 95272617216.

The previous prime is 103212001967. The next prime is 103212002039. The reversal of 103212001997 is 799100212301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64774831081 + 38437170916 = 254509^2 + 196054^2 .

It is a cyclic number.

It is not a de Polignac number, because 103212001997 - 2²² = 103207807693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103212001967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3969692372 + ... + 3969692397.

It is an arithmetic number, because the mean of its divisors is an integer number (27787846695).

Almost surely, 2^103212001997 is an apocalyptic number.

It is an amenable number.

103212001997 is a deficient number, since it is larger than the sum of its proper divisors (7939384783).

103212001997 is an equidigital number, since it uses as much as digits as its factorization.

103212001997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939384782.

The product of its (nonzero) digits is 6804, while the sum is 35.

The spelling of 103212001997 in words is "one hundred three billion, two hundred twelve million, one thousand, nine hundred ninety-seven".