101215214421445 has 4 divisors (see below), whose sum is σ = 121458257305740. Its totient is φ = 80972171537152.

The previous prime is 101215214421337. The next prime is 101215214421487. The reversal of 101215214421445 is 544124412512101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36252549378081 + 64962665043364 = 6021009^2 + 8059942^2 .

It is a cyclic number.

It is not a de Polignac number, because 101215214421445 - 2⁴¹ = 99016191165893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10121521442140 + ... + 10121521442149.

It is an arithmetic number, because the mean of its divisors is an integer number (30364564326435).

Almost surely, 2^{101215214421445} is an apocalyptic number.

It is an amenable number.

101215214421445 is a deficient number, since it is larger than the sum of its proper divisors (20243042884295).

101215214421445 is an equidigital number, since it uses as much as digits as its factorization.

101215214421445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20243042884294.

The product of its (nonzero) digits is 51200, while the sum is 37.

Adding to 101215214421445 its reverse (544124412512101), we get a palindrome (645339626933546).

The spelling of 101215214421445 in words is "one hundred one trillion, two hundred fifteen billion, two hundred fourteen million, four hundred twenty-one thousand, four hundred forty-five".