21021114211141 has 6 divisors (see below), whose sum is σ = 23105852810726. Its totient is φ = 19110103828200.

The previous prime is 21021114211121. The next prime is 21021114211193. The reversal of 21021114211141 is 14111241112012.

It can be written as a sum of positive squares in only one way, i.e., 16702988651041 + 4318125560100 = 4086929^2 + 2078010^2 .

It is not a de Polignac number, because 21021114211141 - 2¹⁵ = 21021114178373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021114211121) 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, 86864108190 + ... + 86864108431.

Almost surely, 2^{21021114211141} is an apocalyptic number.

It is an amenable number.

21021114211141 is a deficient number, since it is larger than the sum of its proper divisors (2084738599585).

21021114211141 is a wasteful number, since it uses less digits than its factorization.

21021114211141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173728216643 (or 173728216632 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 21021114211141 its reverse (14111241112012), we get a palindrome (35132355323153).

The spelling of 21021114211141 in words is "twenty-one trillion, twenty-one billion, one hundred fourteen million, two hundred eleven thousand, one hundred forty-one".