22001220202011 has 4 divisors (see below), whose sum is σ = 29334960269352. Its totient is φ = 14667480134672.

The previous prime is 22001220202001. The next prime is 22001220202099. The reversal of 22001220202011 is 11020202210022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001220202011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22001220202001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3666870033666 + ... + 3666870033671.

It is an arithmetic number, because the mean of its divisors is an integer number (7333740067338).

Almost surely, 2^{22001220202011} is an apocalyptic number.

22001220202011 is a deficient number, since it is larger than the sum of its proper divisors (7333740067341).

22001220202011 is an equidigital number, since it uses as much as digits as its factorization.

22001220202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333740067340.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22001220202011 its reverse (11020202210022), we get a palindrome (33021422412033).

The spelling of 22001220202011 in words is "twenty-two trillion, one billion, two hundred twenty million, two hundred two thousand, eleven".