206121411 has 12 divisors (see below), whose sum is σ = 300801592. Its totient is φ = 135997056.

The previous prime is 206121401. The next prime is 206121427. The reversal of 206121411 is 114121602.

It is not a de Polignac number, because 206121411 - 2⁶ = 206121347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206121401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117181 + ... + 118926.

Almost surely, 2^206121411 is an apocalyptic number.

206121411 is a deficient number, since it is larger than the sum of its proper divisors (94680181).

206121411 is a wasteful number, since it uses less digits than its factorization.

206121411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236210 (or 236207 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 206121411 is about 14356.9290239940. The cubic root of 206121411 is about 590.7100624610.

The spelling of 206121411 in words is "two hundred six million, one hundred twenty-one thousand, four hundred eleven".