1022153521244 has 6 divisors (see below), whose sum is σ = 1788768662184. Its totient is φ = 511076760620.

The previous prime is 1022153521243. The next prime is 1022153521253. The reversal of 1022153521244 is 4421253512201.

It is a self number, because there is not a number n which added to its sum of digits gives 1022153521244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022153521243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127769190152 + ... + 127769190159.

It is an arithmetic number, because the mean of its divisors is an integer number (298128110364).

Almost surely, 2^{1022153521244} is an apocalyptic number.

It is an amenable number.

1022153521244 is a deficient number, since it is larger than the sum of its proper divisors (766615140940).

1022153521244 is a wasteful number, since it uses less digits than its factorization.

1022153521244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255538380315 (or 255538380313 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 1022153521244 in words is "one trillion, twenty-two billion, one hundred fifty-three million, five hundred twenty-one thousand, two hundred forty-four".