201021310154 has 32 divisors (see below), whose sum is σ = 355485092736. Its totient is φ = 83474867520.

The previous prime is 201021310153. The next prime is 201021310163. The reversal of 201021310154 is 451013120102.

It is not an unprimeable number, because it can be changed into a prime (201021310153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1699409 + ... + 1813844.

It is an arithmetic number, because the mean of its divisors is an integer number (11108909148).

Almost surely, 2^201021310154 is an apocalyptic number.

201021310154 is a deficient number, since it is larger than the sum of its proper divisors (154463782582).

201021310154 is a wasteful number, since it uses less digits than its factorization.

201021310154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513390.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 201021310154 its reverse (451013120102), we get a palindrome (652034430256).

The spelling of 201021310154 in words is "two hundred one billion, twenty-one million, three hundred ten thousand, one hundred fifty-four".