1020121141 has 8 divisors (see below), whose sum is σ = 1098942264. Its totient is φ = 941350080.

The previous prime is 1020121133. The next prime is 1020121181. The reversal of 1020121141 is 1411210201.

It can be written as a sum of positive squares in 4 ways, for example, as 439070116 + 581051025 = 20954^2 + 24105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020121141 - 2³ = 1020121133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020121111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37131 + ... + 58471.

It is an arithmetic number, because the mean of its divisors is an integer number (137367783).

Almost surely, 2^1020121141 is an apocalyptic number.

It is an amenable number.

1020121141 is a deficient number, since it is larger than the sum of its proper divisors (78821123).

1020121141 is a wasteful number, since it uses less digits than its factorization.

1020121141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25031.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1020121141 is about 31939.3353249563. The cubic root of 1020121141 is about 1006.6625587282.

Adding to 1020121141 its reverse (1411210201), we get a palindrome (2431331342).

The spelling of 1020121141 in words is "one billion, twenty million, one hundred twenty-one thousand, one hundred forty-one".