2111021401 has 2 divisors, whose sum is σ = 2111021402. Its totient is φ = 2111021400.

The previous prime is 2111021383. The next prime is 2111021411. The reversal of 2111021401 is 1041201112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1911788176 + 199233225 = 43724^2 + 14115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111021401 - 2⁹ = 2111020889 is a prime.

It is a super-2 number, since 2×2111021401² = 8912822710960005602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2111021411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055510700 + 1055510701.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510701).

Almost surely, 2^2111021401 is an apocalyptic number.

It is an amenable number.

2111021401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111021401 is an equidigital number, since it uses as much as digits as its factorization.

2111021401 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 13.

The square root of 2111021401 is about 45945.8529249376. The cubic root of 2111021401 is about 1282.8155391438.

Adding to 2111021401 its reverse (1041201112), we get a palindrome (3152222513).

The spelling of 2111021401 in words is "two billion, one hundred eleven million, twenty-one thousand, four hundred one".