20111211202 has 8 divisors (see below), whose sum is σ = 30172406076. Its totient is φ = 10053742512.

The previous prime is 20111211199. The next prime is 20111211313. The reversal of 20111211202 is 20211211102.

It can be written as a sum of positive squares in 2 ways, for example, as 15156318321 + 4954892881 = 123111^2 + 70391^2 .

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

It is a super-2 number, since 2×20111211202² (a number of 21 digits) contains 22 as substring.

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, 918013 + ... + 939664.

Almost surely, 2^20111211202 is an apocalyptic number.

20111211202 is a deficient number, since it is larger than the sum of its proper divisors (10061194874).

20111211202 is a wasteful number, since it uses less digits than its factorization.

20111211202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863092.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20111211202 its reverse (20211211102), we get a palindrome (40322422304).

The spelling of 20111211202 in words is "twenty billion, one hundred eleven million, two hundred eleven thousand, two hundred two".