21020402314212 has 48 divisors (see below), whose sum is σ = 56055383110272. Its totient is φ = 6005724560640.

The previous prime is 21020402314169. The next prime is 21020402314231. The reversal of 21020402314212 is 21241320402012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2733262 + ... + 7036442.

It is an arithmetic number, because the mean of its divisors is an integer number (1167820481464).

Almost surely, 2^{21020402314212} is an apocalyptic number.

It is an amenable number.

21020402314212 is an abundant number, since it is smaller than the sum of its proper divisors (35034980796060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21020402314212 is a wasteful number, since it uses less digits than its factorization.

21020402314212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361348 (or 4361346 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21020402314212 its reverse (21241320402012), we get a palindrome (42261722716224).

The spelling of 21020402314212 in words is "twenty-one trillion, twenty billion, four hundred two million, three hundred fourteen thousand, two hundred twelve".