20011212206 has 8 divisors (see below), whose sum is σ = 30196560240. Its totient is φ = 9945692128.

The previous prime is 20011212197. The next prime is 20011212241. The reversal of 20011212206 is 60221211002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20011212206² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29956571 + ... + 29957238.

It is an arithmetic number, because the mean of its divisors is an integer number (3774570030).

Almost surely, 2^20011212206 is an apocalyptic number.

20011212206 is a deficient number, since it is larger than the sum of its proper divisors (10185348034).

20011212206 is a wasteful number, since it uses less digits than its factorization.

20011212206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59913978.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20011212206 its reverse (60221211002), we get a palindrome (80232423208).

The spelling of 20011212206 in words is "twenty billion, eleven million, two hundred twelve thousand, two hundred six".