211220010229 has 2 divisors, whose sum is σ = 211220010230. Its totient is φ = 211220010228.

The previous prime is 211220010193. The next prime is 211220010271. The reversal of 211220010229 is 922010022112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148226540004 + 62993470225 = 385002^2 + 250985^2 .

It is a cyclic number.

It is not a de Polignac number, because 211220010229 - 2⁷ = 211220010101 is a prime.

It is a super-2 number, since 2×211220010229² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211220010829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105610005114 + 105610005115.

It is an arithmetic number, because the mean of its divisors is an integer number (105610005115).

Almost surely, 2^211220010229 is an apocalyptic number.

It is an amenable number.

211220010229 is a deficient number, since it is larger than the sum of its proper divisors (1).

211220010229 is an equidigital number, since it uses as much as digits as its factorization.

211220010229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 211220010229 in words is "two hundred eleven billion, two hundred twenty million, ten thousand, two hundred twenty-nine".