1014111221 has 2 divisors, whose sum is σ = 1014111222. Its totient is φ = 1014111220.

The previous prime is 1014111209. The next prime is 1014111271. The reversal of 1014111221 is 1221114101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 947100625 + 67010596 = 30775^2 + 8186^2 .

It is an emirp because it is prime and its reverse (1221114101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1014111221 - 2²² = 1009916917 is a prime.

It is a super-2 number, since 2×1014111221² = 2056843137116221682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1014111196 and 1014111205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1014111271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507055610 + 507055611.

It is an arithmetic number, because the mean of its divisors is an integer number (507055611).

Almost surely, 2^1014111221 is an apocalyptic number.

It is an amenable number.

1014111221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1014111221 is an equidigital number, since it uses as much as digits as its factorization.

1014111221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1014111221 is about 31845.1129845695. The cubic root of 1014111221 is about 1004.6817869970.

Adding to 1014111221 its reverse (1221114101), we get a palindrome (2235225322).

The spelling of 1014111221 in words is "one billion, fourteen million, one hundred eleven thousand, two hundred twenty-one".