101221211201001 has 8 divisors (see below), whose sum is σ = 134964503669280. Its totient is φ = 67479363100032.

The previous prime is 101221211200981. The next prime is 101221211201081. The reversal of 101221211201001 is 100102112122101.

It is a happy number.

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

It is not a de Polignac number, because 101221211201001 - 2²¹ = 101221209103849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101221211201081) 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, 360928296 + ... + 361208633.

It is an arithmetic number, because the mean of its divisors is an integer number (16870562958660).

Almost surely, 2^{101221211201001} is an apocalyptic number.

It is an amenable number.

101221211201001 is a deficient number, since it is larger than the sum of its proper divisors (33743292468279).

101221211201001 is an equidigital number, since it uses as much as digits as its factorization.

101221211201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722183655.

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

Adding to 101221211201001 its reverse (100102112122101), we get a palindrome (201323323323102).

The spelling of 101221211201001 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred eleven million, two hundred one thousand, one".