1023550121 has 12 divisors (see below), whose sum is σ = 1175899920. Its totient is φ = 881128080.

The previous prime is 1023550097. The next prime is 1023550133. The reversal of 1023550121 is 1210553201.

It is a happy number.

It is not a de Polignac number, because 1023550121 - 2⁶ = 1023550057 is a prime.

It is a super-2 number, since 2×1023550121² = 2095309700398229282, which contains 22 as substring.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023550093 and 1023550102.

It is not an unprimeable number, because it can be changed into a prime (1023550141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 461411 + ... + 463623.

It is an arithmetic number, because the mean of its divisors is an integer number (97991660).

Almost surely, 2^1023550121 is an apocalyptic number.

1023550121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1023550121 is a deficient number, since it is larger than the sum of its proper divisors (152349799).

1023550121 is an frugal number, since it uses more digits than its factorization.

1023550121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456 (or 2243 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1023550121 is about 31992.9698683945. The cubic root of 1023550121 is about 1007.7892109969.

The spelling of 1023550121 in words is "one billion, twenty-three million, five hundred fifty thousand, one hundred twenty-one".