21220620150 has 48 divisors (see below), whose sum is σ = 53148236688. Its totient is φ = 5602800000.

The previous prime is 21220620133. The next prime is 21220620151. The reversal of 21220620150 is 5102602212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220620151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 685201 + ... + 715500.

It is an arithmetic number, because the mean of its divisors is an integer number (1107254931).

Almost surely, 2^21220620150 is an apocalyptic number.

21220620150 is an abundant number, since it is smaller than the sum of its proper divisors (31927616538).

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

21220620150 is a wasteful number, since it uses less digits than its factorization.

21220620150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400817 (or 1400812 counting only the distinct ones).

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

The spelling of 21220620150 in words is "twenty-one billion, two hundred twenty million, six hundred twenty thousand, one hundred fifty".