21020402314202 has 16 divisors (see below), whose sum is σ = 31663805817600. Its totient is φ = 10465803917520.

The previous prime is 21020402314169. The next prime is 21020402314231. The reversal of 21020402314202 is 20241320402012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11167427 + ... + 12913257.

It is an arithmetic number, because the mean of its divisors is an integer number (1978987863600).

Almost surely, 2^{21020402314202} is an apocalyptic number.

21020402314202 is a deficient number, since it is larger than the sum of its proper divisors (10643403503398).

21020402314202 is a wasteful number, since it uses less digits than its factorization.

21020402314202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771261.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21020402314202 its reverse (20241320402012), we get a palindrome (41261722716214).

The spelling of 21020402314202 in words is "twenty-one trillion, twenty billion, four hundred two million, three hundred fourteen thousand, two hundred two".