1021121120201 has 32 divisors (see below), whose sum is σ = 1272039552000. Its totient is φ = 798136012800.

The previous prime is 1021121120147. The next prime is 1021121120213. The reversal of 1021121120201 is 1020211211201.

It is not a de Polignac number, because 1021121120201 - 2²² = 1021116925897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021121120401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4003040 + ... + 4250478.

It is an arithmetic number, because the mean of its divisors is an integer number (39751236000).

Almost surely, 2^{1021121120201} is an apocalyptic number.

It is an amenable number.

1021121120201 is a deficient number, since it is larger than the sum of its proper divisors (250918431799).

1021121120201 is a wasteful number, since it uses less digits than its factorization.

1021121120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248009.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021121120201 its reverse (1020211211201), we get a palindrome (2041332331402).

The spelling of 1021121120201 in words is "one trillion, twenty-one billion, one hundred twenty-one million, one hundred twenty thousand, two hundred one".