211220222101101 has 6 divisors (see below), whose sum is σ = 305095876368270. Its totient is φ = 140813481400728.

The previous prime is 211220222101087. The next prime is 211220222101139. The reversal of 211220222101101 is 101101222022112.

211220222101101 is a `hidden beast` number, since 21 + 1 + 220 + 222 + 101 + 101 = 666.

It can be written as a sum of positive squares in only one way, i.e., 121600771871076 + 89619450230025 = 11027274^2 + 9466755^2 .

It is not a de Polignac number, because 211220222101101 - 2¹⁸ = 211220221838957 is a prime.

It is a super-2 number, since 2×211220222101101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220222101201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11734456783386 + ... + 11734456783403.

It is an arithmetic number, because the mean of its divisors is an integer number (50849312728045).

Almost surely, 2^{211220222101101} is an apocalyptic number.

It is an amenable number.

211220222101101 is a deficient number, since it is larger than the sum of its proper divisors (93875654267169).

211220222101101 is a wasteful number, since it uses less digits than its factorization.

211220222101101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23468913566795 (or 23468913566792 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211220222101101 its reverse (101101222022112), we get a palindrome (312321444123213).

The spelling of 211220222101101 in words is "two hundred eleven trillion, two hundred twenty billion, two hundred twenty-two million, one hundred one thousand, one hundred one".