206121623235001 has 16 divisors (see below), whose sum is σ = 207214554792960. Its totient is φ = 205031061544960.

The previous prime is 206121623234977. The next prime is 206121623235061. The reversal of 206121623235001 is 100532326121602.

It is a cyclic number.

It is not a de Polignac number, because 206121623235001 - 2⁴³ = 197325530212793 is a prime.

It is a super-2 number, since 2×206121623235001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206121623235061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940573920 + ... + 940793038.

It is an arithmetic number, because the mean of its divisors is an integer number (12950909674560).

Almost surely, 2^{206121623235001} is an apocalyptic number.

It is an amenable number.

206121623235001 is a deficient number, since it is larger than the sum of its proper divisors (1092931557959).

206121623235001 is a wasteful number, since it uses less digits than its factorization.

206121623235001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224504.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 206121623235001 its reverse (100532326121602), we get a palindrome (306653949356603).

The spelling of 206121623235001 in words is "two hundred six trillion, one hundred twenty-one billion, six hundred twenty-three million, two hundred thirty-five thousand, one".