1490228121001 has 27 divisors (see below), whose sum is σ = 1571567834487. Its totient is φ = 1413041382480.

The previous prime is 1490228120989. The next prime is 1490228121007. The reversal of 1490228121001 is 1001218220941.

The square root of 1490228121001 is 1220749.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1074301155225 + 415926965776 = 1036485^2 + 644924^2 .

It is not a de Polignac number, because 1490228121001 - 2²¹ = 1490226023849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1490228121007) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2005690236 + ... + 2005690978.

Almost surely, 2^{1490228121001} is an apocalyptic number.

1490228121001 is the 1220749-th square number.

1490228121001 is the 610375-th centered octagonal number.

It is an amenable number.

1490228121001 is a deficient number, since it is larger than the sum of its proper divisors (81339713486).

1490228121001 is an frugal number, since it uses more digits than its factorization.

1490228121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 827 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 1490228121001 in words is "one trillion, four hundred ninety billion, two hundred twenty-eight million, one hundred twenty-one thousand, one".