1021225356550 has 48 divisors (see below), whose sum is σ = 2170918766592.
Its totient is φ = 350120628000.
The previous prime is 1021225356533. The next prime is 1021225356553. The reversal of 1021225356550 is 556535221201.
1021225356550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1021225356553) 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, 13244409 + ... + 13321291.
It is an arithmetic number, because the mean of its divisors is an integer number (45227474304).
Almost surely, 21021225356550 is an apocalyptic number.
1021225356550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1021225356550 is an abundant number, since it is smaller than the sum of its proper divisors (1149693410042).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1021225356550 is a wasteful number, since it uses less digits than its factorization.
1021225356550 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 114853 (or 114848 counting only the distinct ones).
The product of its (nonzero) digits is 90000, while the sum is 37.
The spelling of 1021225356550 in words is "one trillion, twenty-one billion, two hundred twenty-five million, three hundred fifty-six thousand, five hundred fifty".