11111021212203 has 12 divisors (see below), whose sum is σ = 17508275849688. Its totient is φ = 6733952249760.

The previous prime is 11111021212177. The next prime is 11111021212219. The reversal of 11111021212203 is 30221212011111.

It is a happy number.

It is not a de Polignac number, because 11111021212203 - 2¹⁸ = 11111020950059 is a prime.

It is a super-2 number, since 2×11111021212203² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11111021214203) 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, 56116268650 + ... + 56116268847.

It is an arithmetic number, because the mean of its divisors is an integer number (1459022987474).

Almost surely, 2^{11111021212203} is an apocalyptic number.

11111021212203 is a deficient number, since it is larger than the sum of its proper divisors (6397254637485).

11111021212203 is a wasteful number, since it uses less digits than its factorization.

11111021212203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112232537514 (or 112232537511 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11111021212203 its reverse (30221212011111), we get a palindrome (41332233223314).

The spelling of 11111021212203 in words is "eleven trillion, one hundred eleven billion, twenty-one million, two hundred twelve thousand, two hundred three".