20621212602 has 64 divisors (see below), whose sum is σ = 44908732800. Its totient is φ = 6288128000.

The previous prime is 20621212559. The next prime is 20621212621.

It is a happy number.

20621212602 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×20621212602³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 516352 + ... + 554852.

It is an arithmetic number, because the mean of its divisors is an integer number (701698950).

Almost surely, 2^20621212602 is an apocalyptic number.

20621212602 is an abundant number, since it is smaller than the sum of its proper divisors (24287520198).

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

20621212602 is a wasteful number, since it uses less digits than its factorization.

20621212602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38671.

The product of its (nonzero) digits is 1152, while the sum is 24.

The spelling of 20621212602 in words is "twenty billion, six hundred twenty-one million, two hundred twelve thousand, six hundred two".