221201011010029 has 2 divisors, whose sum is σ = 221201011010030. Its totient is φ = 221201011010028.

The previous prime is 221201011009999. The next prime is 221201011010033. The reversal of 221201011010029 is 920010110102122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193635518428804 + 27565492581225 = 13915298^2 + 5250285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221201011010029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221201011009991 and 221201011010009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221201011010069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600505505014 + 110600505505015.

It is an arithmetic number, because the mean of its divisors is an integer number (110600505505015).

Almost surely, 2^{221201011010029} is an apocalyptic number.

It is an amenable number.

221201011010029 is a deficient number, since it is larger than the sum of its proper divisors (1).

221201011010029 is an equidigital number, since it uses as much as digits as its factorization.

221201011010029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 221201011010029 in words is "two hundred twenty-one trillion, two hundred one billion, eleven million, ten thousand, twenty-nine".