612121203 has 6 divisors (see below), whose sum is σ = 884175084. Its totient is φ = 408080796.

The previous prime is 612121201. The next prime is 612121231. The reversal of 612121203 is 302121216.

It is not a de Polignac number, because 612121203 - 2¹ = 612121201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612121201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34006725 + ... + 34006742.

It is an arithmetic number, because the mean of its divisors is an integer number (147362514).

Almost surely, 2^612121203 is an apocalyptic number.

612121203 is a deficient number, since it is larger than the sum of its proper divisors (272053881).

612121203 is a wasteful number, since it uses less digits than its factorization.

612121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68013473 (or 68013470 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 612121203 is about 24741.0833028790. The cubic root of 612121203 is about 849.0745188829.

Adding to 612121203 its reverse (302121216), we get a palindrome (914242419).

The spelling of 612121203 in words is "six hundred twelve million, one hundred twenty-one thousand, two hundred three".