21203064411135 has 16 divisors (see below), whose sum is σ = 33924977349984. Its totient is φ = 11308276255232.

The previous prime is 21203064411131. The next prime is 21203064411163. The reversal of 21203064411135 is 53111446030212.

It is a cyclic number.

It is not a de Polignac number, because 21203064411135 - 2² = 21203064411131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21203064411096 and 21203064411105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203064411131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7082539 + ... + 9621251.

It is an arithmetic number, because the mean of its divisors is an integer number (2120311084374).

Almost surely, 2^{21203064411135} is an apocalyptic number.

21203064411135 is a deficient number, since it is larger than the sum of its proper divisors (12721912938849).

21203064411135 is a wasteful number, since it uses less digits than its factorization.

21203064411135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095514.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 21203064411135 in words is "twenty-one trillion, two hundred three billion, sixty-four million, four hundred eleven thousand, one hundred thirty-five".