102021211121001 has 32 divisors (see below), whose sum is σ = 138683570522112. Its totient is φ = 66688151175360.

The previous prime is 102021211120957. The next prime is 102021211121023. The reversal of 102021211121001 is 100121112120201.

It is a happy number.

It is not a de Polignac number, because 102021211121001 - 2³⁰ = 102020137379177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102021211101001) 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, 2048141386 + ... + 2048191196.

It is an arithmetic number, because the mean of its divisors is an integer number (4333861578816).

Almost surely, 2^{102021211121001} is an apocalyptic number.

It is an amenable number.

102021211121001 is a deficient number, since it is larger than the sum of its proper divisors (36662359401111).

102021211121001 is a wasteful number, since it uses less digits than its factorization.

102021211121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57853.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102021211121001 its reverse (100121112120201), we get a palindrome (202142323241202).

The spelling of 102021211121001 in words is "one hundred two trillion, twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, one".