21012214035 has 16 divisors (see below), whose sum is σ = 33627202560. Its totient is φ = 11203960800.

The previous prime is 21012214021. The next prime is 21012214037. The reversal of 21012214035 is 53041221012.

It is not a de Polignac number, because 21012214035 - 2¹⁰ = 21012213011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21012214037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90595 + ... + 224124.

It is an arithmetic number, because the mean of its divisors is an integer number (2101700160).

Almost surely, 2^21012214035 is an apocalyptic number.

21012214035 is a deficient number, since it is larger than the sum of its proper divisors (12614988525).

21012214035 is a wasteful number, since it uses less digits than its factorization.

21012214035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319178.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 21012214035 its reverse (53041221012), we get a palindrome (74053435047).

The spelling of 21012214035 in words is "twenty-one billion, twelve million, two hundred fourteen thousand, thirty-five".